Genetic Testing & Counselling

Understand genetic testing, carrier status, family history, and genetic counselling: the language to make sense of these before you are in a hospital hearing them for the first time.

This is education, not a compatibility test

Shared Blood helps you understand testing, carrier status, and counselling so you can make your own informed decisions. It never approves or rejects couples, never says anyone is “genetically compatible” or “incompatible”, and never tells anyone whether to marry or have children. Consanguineous marriage has real cultural and social significance; genetics education is about information, not judgement.

Screening vs diagnostic testing

These are different kinds of test with different purposes. The exact meaning varies by test.

Screening

Screening estimates whether there may be an increased chance of a condition. A screening result is not a diagnosis.

Diagnostic testing

Diagnostic testing is used to determine whether a specific condition or finding is present, often after screening or when there is a clinical reason.

Which test is right, and what a result means, is explained by a healthcare professional in each person's context.

References:

Screening tests in pregnancy, how screening differs from diagnostic testing, NHS (United Kingdom)
What is genetic testing?, MedlinePlus Genetics (U.S. National Library of Medicine)

The carrier-testing learning journey

A flexible way to build understanding, step by step. It is a learning path, not a personal assessment.

1What is a carrier?
2How autosomal recessive inheritance works
3Why two carrier parents is the context that matters
4What carrier testing may examine
5What a result may, and may not, mean
6Questions to ask before testing
7How genetic counselling can help you understand your options

Testing education topics

Browse curated topics, or narrow them by context, audience, category, or condition. Choosing a context only filters the education shown; it never works out your personal risk.

Life stageForTesting categoryCondition

14 topics

Carrier testingGeneralBefore marriageBefore pregnancy
Understanding carrier testing
Carrier testing may be discussed when learning whether a person carries one altered copy of a gene linked to a recessive condition.
What it is
A carrier usually has one altered copy of a gene associated with an autosomal recessive condition and one working copy. Carrier testing looks for whether a person carries such an altered copy.
Why it may be discussed
It may be discussed when there is a family history of a recessive condition, when partners share ancestry, or when a couple wishes to understand inheritance before or after marriage. It is a personal, voluntary choice.
What it can tell you
It may indicate whether a person carries a particular altered copy that the test examined, which can be relevant to understanding inheritance within a family.
What it cannot tell you
A carrier result does not mean a person has the disorder, and being a carrier is not the same as being sick. A result only covers what the specific test examined; it cannot rule out every possible variant.
Before testing
It can help to understand which condition or genes the test examines, why it is being considered, and that carrier information can sometimes be relevant to biological relatives.
After testing
A genetics professional can explain what a result means in a person’s own context. Shared Blood does not interpret results.
Questions to ask
- What condition or genes is this test examining?
- What could the result mean, and could it be uncertain?
- Could the result be relevant to biological relatives?
Professionals who may help: Genetic counsellor، Medical geneticist
References:
- What is carrier testing?, MedlinePlus Genetics (U.S. National Library of Medicine)
Diagnostic genetic testingGeneralAfter a child's diagnosisAfter a relative's diagnosis
Understanding diagnostic genetic testing
Diagnostic genetic testing is one possible part of a broader assessment, not a single conclusive answer.
What it is
Diagnostic genetic testing looks for a specific genetic change in a person who may already have signs of a condition. It is usually one part of an assessment that can also involve history, examination, family history, laboratory tests, imaging, or specialist review.
Why it may be discussed
It may be discussed when a doctor is investigating a possible genetic condition and wants to confirm or clarify a diagnosis.
What it can tell you
It may identify a specific genetic change that helps explain a condition, which can guide a care team’s understanding.
What it cannot tell you
Genetic testing is not universally conclusive. Not finding a change does not always rule out a condition, and the meaning of a result depends on the test, the condition, and current knowledge.
Before testing
It can help to understand which condition is being investigated and what different results might mean.
After testing
A genetics or specialist professional interprets a diagnostic result within the person’s full clinical picture.
Questions to ask
- What condition is this test investigating?
- Does a result confirm or rule out a diagnosis, or is more assessment sometimes needed?
Professionals who may help: Medical geneticist، Genetic counsellor، Paediatrician
References:
- What is genetic testing?, MedlinePlus Genetics (U.S. National Library of Medicine)
- GeneReviews, expert-authored, peer-reviewed disease descriptions, University of Washington / NCBI Bookshelf
Family variant testingGeneralAfter a relative's diagnosisAfter a child's diagnosis
Family variant and cascade testing
When a specific genetic change is already known in a family, relatives may sometimes discuss testing for that same change.
What it is
Family variant testing looks for a particular genetic change that has already been identified in a relative. Cascade testing describes offering this to relatives step by step where relevant.
Why it may be discussed
Because genetic variants may be shared between biological relatives, a finding in one person can sometimes be relevant to family members who choose to learn more.
What it can tell you
It may show whether a relative carries the same specific change already identified in the family.
What it cannot tell you
It does not mean every relative requires testing. Whether to test is a personal choice, and Shared Blood does not generate a list of relatives to test.
Before testing
A genetics professional can explain who in a family the information might be relevant to, and how a relative may choose whether to learn it.
After testing
The meaning of a result for a relative is discussed individually with a professional, not assumed from another family member’s result.
Questions to ask
- Could this finding be relevant to biological relatives?
- How can a relative choose whether to learn this information?
Professionals who may help: Genetic counsellor، Medical geneticist
References:
- Regulation of Genetic Tests / Genetic Testing FAQ, National Human Genome Research Institute (NHGRI)
- What is genetic testing?, MedlinePlus Genetics (U.S. National Library of Medicine)
Preconception educationBefore marriageAfter marriageBefore pregnancy
Preconception genetic education
Some individuals or couples learn about carrier status and inheritance before pregnancy. This is high-level education, not a recommendation.
This is educational only. Shared Blood does not make marriage or reproductive decisions and never judges whether a couple should marry or have children.
What it is
Preconception education covers understanding inheritance, family history, and the kinds of testing that some couples choose to learn about before planning a pregnancy.
Why it may be discussed
It may be discussed when a couple wishes to understand inheritance in their own circumstances. Choices remain entirely personal.
What it can tell you
It can help a couple understand what questions to bring to a genetics professional and what options exist to learn more.
What it cannot tell you
It does not decide whether a couple should marry or have children, and it never labels a couple as "compatible" or "incompatible".
Before testing
Understanding one’s own family history and questions in advance can make a conversation with a professional more useful.
After testing
Any decisions belong to the individuals involved, supported by non-directive genetic counselling where available.
Questions to ask
- What options exist to understand inheritance in our situation?
- Where is genetic counselling available to us?
Professionals who may help: Genetic counsellor، Medical geneticist
References:
- Community genetics services and management of genetic disorders, World Health Organization
- What is carrier testing?, MedlinePlus Genetics (U.S. National Library of Medicine)
Prenatal testing educationDuring pregnancyBefore pregnancy
Prenatal testing education
A high-level explanation of prenatal testing, and how screening differs from diagnostic testing.
Pregnancy content is educational only. Shared Blood never recommends continuing or ending a pregnancy, or any procedure.
What it is
Prenatal testing describes tests that may be discussed during pregnancy. Screening estimates whether there may be an increased chance of a condition, while diagnostic testing is used to determine whether a specific condition is present.
Why it may be discussed
It may be discussed by a maternity or genetics team during pregnancy care. Whether to have any test is a personal decision.
What it can tell you
Depending on the specific test, it may give information about the chance of, or the presence of, a particular condition.
What it cannot tell you
Shared Blood does not provide pregnancy diagnosis, fetal prognosis, personalized testing timing, or any recommendation to continue or end a pregnancy.
Before testing
It can help to understand whether a test is a screening test or a diagnostic test, and what each may or may not tell you.
After testing
The meaning of a prenatal result is explained by the maternity or genetics team within the pregnancy’s own context.
Questions to ask
- Is this a screening test or a diagnostic test?
- What could each result mean, and what are the options?
Professionals who may help: Genetic counsellor، Medical geneticist، Paediatrician
References:
- Screening tests in pregnancy, how screening differs from diagnostic testing, NHS (United Kingdom)
Newborn screening educationGeneralDuring pregnancy
Newborn screening education
A conceptual explanation of newborn screening, what it generally is, not a claim about what every hospital offers.
What it is
Newborn screening is testing offered in some places soon after birth to check for certain conditions early, so that care can begin sooner if needed.
Why it may be discussed
It may be discussed as part of general education about how some conditions can be identified early.
What it can tell you
Where it is available, it may flag whether a baby should have further assessment for a particular condition.
What it cannot tell you
Availability differs by place. Shared Blood does not claim that Pakistan has universal newborn screening for every condition, country-specific claims require current evidence.
Before testing
Families can ask their maternity team what newborn testing, if any, is available where they give birth.
After testing
Any screening result that needs follow-up is explained and managed by the care team.
Questions to ask
- What newborn testing, if any, is available where we give birth?
Professionals who may help: Paediatrician، Medical geneticist
References:
- Genetic and genomic testing, NHS (United Kingdom)
- Community genetics services and management of genetic disorders, World Health Organization
Population screening educationGeneralBefore marriage
Population screening education
A general explanation of population screening, using beta thalassemia as one example where community programmes exist.
Shared Blood does not state whether any premarital or thalassaemia testing law is currently mandatory or enforced in Pakistan. Ask a qualified source for current, local information.
What it is
Population screening offers testing to a group of people, for example, to identify carriers of a common recessive condition in a community.
Why it may be discussed
Beta thalassemia carrier screening has been part of community and premarital programmes in some settings, aiming to help people understand carrier status.
What it can tell you
It can help people in a community learn about carrier status so they can seek further information if they wish.
What it cannot tell you
Shared Blood does not claim that any particular screening programme is universally implemented or enforced across Pakistan; such claims need current evidence.
Before testing
Understanding what a screening programme examines, and that participation is a personal choice, can help people decide.
After testing
A carrier result from screening can be discussed with a genetics professional to understand what it may mean.
Questions to ask
- What does this screening programme examine, and is taking part my choice?
Professionals who may help: Genetic counsellor، Haematologist، Medical geneticist
References:
- Community genetics services and management of genetic disorders, World Health Organization
- Prenatal diagnosis and carrier screening for beta-thalassaemia in Pakistan, Ahmed S. et al., peer-reviewed literature on thalassaemia prevention in Pakistan, 2002
Family history reviewGeneralBefore marriageBefore pregnancyAfter a relative's diagnosis
Reviewing your family history
Family history is educational context, the kinds of things a genetics professional may ask about. It is not used to calculate personal risk.
What it is
Family history includes things like known genetic diagnoses, the same condition appearing more than once, known carrier status, and whether biological parents share ancestry.
Why it may be discussed
A genetics professional may ask about family history to understand context. Knowing this in advance can make a conversation more useful.
What it can tell you
Reviewing family history can help a person prepare questions and share relevant background with a professional.
What it cannot tell you
Shared Blood does not use family history to calculate a personal disease probability, and it never stores a family tree or any family details.
Before testing
A generic preparation checklist (below) can help gather this background privately, without submitting anything to Shared Blood.
After testing
Family-history information is best shared directly with a qualified professional who can discuss what it may mean.
Questions to ask
- Is there a known genetic condition or carrier status in our family?
- Do the biological parents share ancestry, and is that relevant to discuss?
Professionals who may help: Genetic counsellor، Medical geneticist
References:
- Regulation of Genetic Tests / Genetic Testing FAQ, National Human Genome Research Institute (NHGRI)
- What is genetic testing?, MedlinePlus Genetics (U.S. National Library of Medicine)
Carrier testingGeneralBefore marriageBefore pregnancyAfter a relative's diagnosis
Beta thalassemia carrier (trait) education
What it means to carry the beta thalassemia trait, and why two carrier parents is the context that matters.
Carrying the beta thalassemia trait is not the same as having beta thalassemia major. Shared Blood does not tell couples whether to marry or have children.
What it is
A person with the beta thalassemia trait (a carrier) has one altered copy of the beta-globin gene and one working copy. This is different from beta thalassemia major, which involves alterations in both copies.
Why it may be discussed
It may be discussed where there is a family history, where a couple shares ancestry, or as part of community and premarital education about carrier status.
What it can tell you
Carrier testing may indicate whether a person carries the trait. When two partners are both carriers, a genetics professional can explain how inheritance works for their situation.
What it cannot tell you
Being a carrier does not mean a person has beta thalassemia major or will become severely ill. A carrier result about one person does not by itself determine what will happen in a future pregnancy.
Before testing
It can help to understand that carrier testing looks at carrier status, and that a result may be relevant to biological relatives.
After testing
A haematologist or genetics professional can explain what a carrier result means for a person and, if relevant, for a couple. Shared Blood does not interpret the result.
Questions to ask
- Does this test look at carrier status or at beta thalassemia major?
- If both partners are carriers, who can explain what that means for us?
Professionals who may help: Haematologist، Genetic counsellor، Medical geneticist
References:
- Beta thalassemia, MedlinePlus Genetics (U.S. National Library of Medicine)
- About Thalassaemia, carriers and trait, Thalassaemia International Federation
Carrier testingGeneralBefore marriageBefore pregnancyAfter a relative's diagnosis
Cystic fibrosis carrier education
What carrier testing for cystic fibrosis looks at, and why a limited panel does not check every possible variant.
A negative result on a limited carrier panel does not mean "no CF risk". Different tests examine different variants, a genetics professional can explain the limits.
What it is
Cystic fibrosis is inherited in an autosomal recessive pattern. A carrier has one altered copy of the CFTR gene and usually does not have the condition, but can pass the altered copy to children.
Why it may be discussed
It may be discussed where there is a family history of CF, where partners share ancestry, or when a couple wishes to understand carrier status.
What it can tell you
It may indicate whether a person carries one of the disease-causing variants that the specific test panel examined.
What it cannot tell you
A negative result on a limited panel does not eliminate all possible CF-related genetic risk, because many different CFTR variants exist and a panel checks only some of them.
Before testing
It can help to ask which variants a panel examines and what a negative result would and would not mean for that particular test.
After testing
A genetics professional can explain a CF carrier result in a person’s context, including the limits of the specific panel used.
Questions to ask
- Which CFTR variants does this panel examine?
- What would a negative result mean, and what would it not rule out?
Professionals who may help: Genetic counsellor، Medical geneticist، Pulmonologist (lung specialist)
References:
- Cystic fibrosis, MedlinePlus Genetics (U.S. National Library of Medicine)
- Carrier Testing for Cystic Fibrosis, Cystic Fibrosis Foundation
Diagnostic genetic testingGeneralAfter a child's diagnosisAfter a relative's diagnosis
Testing across the lysosomal storage disorders
Lysosomal storage disorders are a broad group, and testing differs between them; there is no single "LSD test".
There is no single "LSD genetic test". Testing differs between disorders, and the right approach is decided by a specialist for the specific disorder.
What it is
Because this is a group of different disorders, the way each one is investigated varies. Approaches can include genetic, biochemical, enzyme-activity, or other clinical assessments, depending on the specific disorder.
Why it may be discussed
It may be discussed when a doctor is investigating a possible disorder in this group, or after a diagnosis in a relative.
What it can tell you
Depending on the specific disorder, an appropriate test may help a specialist understand or confirm what is happening.
What it cannot tell you
There is no single genetic test that covers all lysosomal storage disorders. Shared Blood does not tell a user which test to select, a metabolic specialist decides what is appropriate.
Before testing
It can help to understand that the right approach depends on the specific disorder being considered, guided by a specialist.
After testing
A metabolic specialist or geneticist explains what a result means for the specific disorder in question.
Questions to ask
- Which specific disorder is being investigated, and what approach fits it?
- Who coordinates testing for this group of disorders?
Professionals who may help: Metabolic specialist، Medical geneticist، Genetic counsellor
References:
- Rare Disease Database, Lysosomal Storage Disorders, National Organization for Rare Disorders (NORD)
- Genetic and Rare Diseases Information Center (GARD), U.S. National Center for Advancing Translational Sciences
Family variant testingGeneralAfter a relative's diagnosis
Gaucher disease: family and carrier context
For this specific disorder, family variant or carrier information may sometimes be discussed; this does not apply to every disorder in the group.
This applies to one specific disorder within the group, not to all lysosomal storage disorders.
What it is
Gaucher disease is one specific disorder within the group. Where a particular variant is already known in a family, relatives may sometimes discuss carrier or family variant testing with a specialist.
Why it may be discussed
It may be discussed after a diagnosis in a relative, to understand inheritance within that specific family.
What it can tell you
It may show whether a relative carries the same specific change already identified in the family.
What it cannot tell you
This guidance is specific to one disorder and does not apply to every lysosomal storage disorder. It does not mean every relative requires testing.
Before testing
A metabolic specialist or genetics professional can explain who the information might be relevant to within one family.
After testing
The meaning of a result is discussed individually with a specialist, not assumed from a relative’s result.
Questions to ask
- Is this information specific to our family’s particular disorder?
- Who can explain what a result would mean for a relative?
Professionals who may help: Metabolic specialist، Genetic counsellor، Medical geneticist
References:
- Genetic and Rare Diseases Information Center (GARD), U.S. National Center for Advancing Translational Sciences
- Rare Disease Database, Lysosomal Storage Disorders, National Organization for Rare Disorders (NORD)
Diagnostic genetic testingGeneralAfter a child's diagnosisAfter a relative's diagnosis
Ehlers-Danlos testing differs by subtype
EDS is a group of subtypes, and whether a confirmatory genetic test exists depends on the specific subtype.
Testing is not the same across EDS subtypes. Genetic testing does not confirm every EDS type.
What it is
The Ehlers-Danlos syndromes are a group of subtypes. For several subtypes, a genetic change has been identified and molecular testing may be part of assessment; for others it may not be, so the approach depends on the subtype.
Why it may be discussed
It may be discussed when a specialist is assessing which EDS subtype fits a person’s clinical picture.
What it can tell you
For subtypes with an identified genetic cause, testing may support a diagnosis alongside clinical assessment.
What it cannot tell you
Genetic testing does not confirm every EDS type. For some subtypes, diagnosis is based on clinical criteria rather than a molecular test, so a test does not apply in the same way across subtypes.
Before testing
It can help to ask which subtype is being considered and whether a genetic test applies to that subtype.
After testing
A geneticist or specialist explains what a result means for the specific subtype in question.
Questions to ask
- Which EDS subtype is being considered?
- Does a genetic test apply to this subtype, or is diagnosis clinical?
Professionals who may help: Medical geneticist، Genetic counsellor، Orthopaedic specialist
References:
- The Types of Ehlers-Danlos Syndromes, diagnosis and testing by subtype, The Ehlers-Danlos Society
- Ehlers-Danlos syndrome, MedlinePlus Genetics (U.S. National Library of Medicine)
Diagnostic genetic testingGeneralAfter a relative's diagnosis
Hypermobile EDS and genetic testing
For hypermobile EDS, current science does not support a routine confirmatory molecular test, diagnosis is clinical.
Hypermobile EDS currently has no routine confirmatory genetic test; diagnosis is clinical. A negative genetic test does not rule it out.
What it is
Hypermobile EDS (hEDS) is one EDS subtype. Unlike some other subtypes, it currently has no single confirmatory genetic (molecular) test, and diagnosis is based on clinical criteria assessed by a professional.
Why it may be discussed
It may be discussed to explain why a person with suspected hEDS may not be offered a confirmatory genetic test in the way some other subtypes are.
What it can tell you
Genetic testing may sometimes be used to help rule out other subtypes that do have identified genetic causes.
What it cannot tell you
Shared Blood does not present hEDS as having a routine confirmatory molecular test, because current science does not support that. A negative genetic test does not rule out hEDS.
Before testing
It can help to understand that a clinical assessment, not a single gene test, is central to identifying hEDS.
After testing
A geneticist or specialist explains how clinical criteria and any tests fit together for the individual.
Questions to ask
- Is a genetic test used to confirm hypermobile EDS, or to look at other subtypes?
Professionals who may help: Medical geneticist، Genetic counsellor، Orthopaedic specialist
References:
- The Types of Ehlers-Danlos Syndromes, diagnosis and testing by subtype, The Ehlers-Danlos Society
- Ehlers-Danlos syndrome, MedlinePlus Genetics (U.S. National Library of Medicine)

Understanding kinds of results

These explain what a kind of result may and may not mean in general. Shared Blood never interprets an individual's actual report.

Positive / pathogenic finding
May mean: A change was found that is currently understood to be linked to a condition. What it means for a person depends on the test, the gene, the condition, and their clinical context.
Does not mean: It does not automatically mean "has the disease" in every case, and it does not tell a person how a condition will affect them. Only a professional can explain a finding in context.
References:
- What is genetic testing?, MedlinePlus Genetics (U.S. National Library of Medicine)
- GeneReviews, expert-authored, peer-reviewed disease descriptions, University of Washington / NCBI Bookshelf
Negative result
May mean: The specific change or changes the test looked for were not found. Its meaning depends on what was tested and why.
Does not mean: A negative result does not mean "genetically clear" or "no risk". A test only covers what it examined, and other variants it did not check may still exist.
References:
- What is genetic testing?, MedlinePlus Genetics (U.S. National Library of Medicine)
- Genetic and genomic testing, NHS (United Kingdom)
Carrier finding
May mean: A person carries one altered copy of a gene associated with a recessive condition. This information can be relevant to understanding inheritance in a family.
Does not mean: Being a carrier does not mean a person is sick, and it does not, on its own, determine what will happen in a future pregnancy. A genetics professional can explain the context.
References:
- What is carrier testing?, MedlinePlus Genetics (U.S. National Library of Medicine)
Variant of uncertain significance (VUS)
May mean: A DNA change was found whose connection to a condition is not yet clear based on current knowledge. Understanding of a VUS can change over time as more is learned.
Does not mean: A VUS is not confirmation of a disorder. Shared Blood does not classify a VUS or judge whether it is harmful, only appropriate clinical experts assess this over time.
References:
- What does it mean to have a variant of uncertain significance?, MedlinePlus Genetics (U.S. National Library of Medicine)
Inconclusive result
May mean: A test did not give a clear answer. Sometimes further assessment or different tests are considered by the care team.
Does not mean: An inconclusive result does not confirm or rule out a condition on its own. A professional explains what, if anything, is considered next.
References:
- What is genetic testing?, MedlinePlus Genetics (U.S. National Library of Medicine)
- Genetic and genomic testing, NHS (United Kingdom)

Meaning depends on the test, the genes and variants, the condition, the clinical context, and current knowledge. Only a qualified professional can explain a specific result.

What genetic counselling is

Genetic counselling helps individuals and families understand inherited conditions, family history, testing options, and the possible meanings of genetic information. It is supportive and non-directive: it helps a person think through their own circumstances and values, and it does not make decisions for them.

What may be discussed

Family history and how a condition is inherited
What testing options exist and what results may or may not mean
Questions, concerns, and a person’s own values and priorities
Where testing and support may be available

What genetic counselling does not do

It does not tell a couple whether to marry or not to marry
It does not tell people whether to have children or end a pregnancy
It does not approve or reject couples as "compatible" or "incompatible"
It does not make personal or reproductive decisions for anyone

Professionals who may help: Genetic counsellor، Medical geneticist

References:

About Genetic Counselors, what genetic counseling is, National Society of Genetic Counselors (NSGC)
Community genetics services and management of genetic disorders, World Health Organization

Questions to prepare

Conversation prompts to take to a professional. Shared Blood does not answer these for you, and never evaluates a specific laboratory.

Before genetic testing

What condition or genes is this test examining?
Why is this test being considered?
What results could I receive?
Could the result be uncertain?
What would a negative result mean for this test, and could it affect biological relatives?

After genetic testing

What does this result mean in my clinical context?
Does it confirm a diagnosis or carrier status?
Are additional tests sometimes considered?
Could it be relevant to biological relatives, and who can explain it?

For a testing provider

What test is being performed?
Which genes or variants are examined?
Who interprets the result?
Will I receive a written report, how is my information stored, and who can access it?
Is genetic counselling available?

Family history preparation guide

A generic checklist to gather background privately before speaking with a professional. You keep it; nothing is submitted to Shared Blood.

This is a blank template. It does not include any calculator results, relationship selections, names, or genetic status; you complete it privately and offline.

1. Known genetic diagnoses in the family
2. Any known carrier status
3. The same condition or similar concerns appearing in more than one relative
4. Whether the biological parents share ancestry
5. Any previous genetic reports the family already has
6. Questions you want to ask a genetics professional

Privacy, respect, and your decisions

Genetic privacy
Genetic information can be sensitive and may have implications for biological relatives. It is worth asking any provider how your information is stored, used, and shared. Shared Blood does not collect genetic results.
No stigma, no blame
A family with a known history of an inherited condition is exactly that, not a “risky” or “bad” family. Carriers and affected people deserve respect, free of stigma toward any community, caste, or biradari.
Inherited from both parents
Children inherit genetic information from both biological parents. In autosomal recessive conditions, a child may inherit one disease-associated variant from each parent; this is never one parent's, or one mother's, fault.
Your values and beliefs
Religious beliefs, family values, and personal ethics are yours. You may discuss these questions with qualified healthcare professionals and trusted advisors. Shared Blood does not give religious rulings or make personal decisions for you.

Learn how inheritance works in the Genetics Explorer

The carrier-testing learning journey

A flexible way to build understanding, step by step. It is a learning path, not a personal assessment.

1What is a carrier?

2How autosomal recessive inheritance works

3Why two carrier parents is the context that matters

4What carrier testing may examine

5What a result may, and may not, mean

6Questions to ask before testing

7How genetic counselling can help you understand your options

What genetic counselling is

Questions to prepare

Conversation prompts to take to a professional. Shared Blood does not answer these for you, and never evaluates a specific laboratory.

Before genetic testing

What condition or genes is this test examining?
Why is this test being considered?
What results could I receive?
Could the result be uncertain?
What would a negative result mean for this test, and could it affect biological relatives?

After genetic testing

What does this result mean in my clinical context?
Does it confirm a diagnosis or carrier status?
Are additional tests sometimes considered?
Could it be relevant to biological relatives, and who can explain it?

For a testing provider

What test is being performed?
Which genes or variants are examined?
Who interprets the result?
Will I receive a written report, how is my information stored, and who can access it?
Is genetic counselling available?

Privacy, respect, and your decisions

Genetic privacy

Genetic information can be sensitive and may have implications for biological relatives. It is worth asking any provider how your information is stored, used, and shared. Shared Blood does not collect genetic results.

No stigma, no blame

A family with a known history of an inherited condition is exactly that, not a “risky” or “bad” family. Carriers and affected people deserve respect, free of stigma toward any community, caste, or biradari.

Inherited from both parents

Children inherit genetic information from both biological parents. In autosomal recessive conditions, a child may inherit one disease-associated variant from each parent; this is never one parent's, or one mother's, fault.

Your values and beliefs

Religious beliefs, family values, and personal ethics are yours. You may discuss these questions with qualified healthcare professionals and trusted advisors. Shared Blood does not give religious rulings or make personal decisions for you.