Genetic Testing for Infertility: What to Expect

Fertility genetic testing looks for certain changes in genes or chromosomes that may affect fertility or be passed on to a child. It is not needed for every couple, but it can be useful when your medical history, sperm results, or pregnancy history suggests a genetic concern. Most tests use a blood or saliva sample, followed by counselling to help you understand the findings.

If your doctor has recommended genetic testing, it is natural to feel worried. For couples in Kanpur and across Uttar Pradesh, knowing what to expect can make the process feel less overwhelming. A recommendation for testing does not mean that you cannot have a healthy child.

What is fertility genetic testing?

Genes carry instructions for how the body develops and functions. They are packaged into chromosomes. A change in a gene, or in the number or structure of chromosomes, may sometimes affect egg production, sperm production, embryo development, or pregnancy.

Fertility genetic testing is an umbrella term, not one single test. Some tests investigate a possible reason for infertility. Others check whether a person carries an inherited condition, or assess embryos created through IVF for a particular genetic concern.

These tests answer different questions. Your doctor should explain which question matters in your situation before recommending a test.

Who may benefit from genetic testing?

Testing is usually considered after reviewing both partners’ medical and family histories and initial fertility investigations. It is not a routine requirement for everyone trying to conceive.

Your doctor may discuss testing when there is:

• No sperm in the semen, particularly when reduced sperm production is suspected, or a very low sperm count with relevant clinical findings.
• Premature ovarian insufficiency, where the ovaries stop functioning normally before age 40.
• A known inherited condition or chromosome rearrangement in either partner or the family.
• A previous pregnancy or child affected by a genetic condition.
• Repeated pregnancy losses, where selected genetic investigations may be appropriate after assessment.
• An increased chance of both partners carrying the same inherited condition, including when partners are blood relatives.

Carrier screening may also be discussed before pregnancy, even without infertility or a known family history. However, unsuccessful fertility treatment alone does not automatically mean that a broad genetic panel will be useful.

Which genetic tests might be recommended?

Chromosome testing, or karyotyping

A karyotype examines the number and overall structure of chromosomes, usually using a blood sample. It may identify an extra or missing chromosome, or a rearrangement such as a balanced translocation.

A person with a balanced rearrangement may be healthy but have a greater chance of producing eggs or sperm with unbalanced chromosome material. Karyotyping does not detect every genetic condition.

Tests for selected causes of male infertility

In selected men with absent or severely reduced sperm production, doctors may recommend testing for small missing sections of the Y chromosome, called Y-chromosome microdeletions. Results may help guide discussions about sperm retrieval and possible transmission to a son.

CFTR gene testing may be advised when the tubes carrying sperm, called the vas deferens, are absent or when certain forms of obstruction are suspected. These investigations are chosen according to the clinical findings, not simply because a semen report is abnormal. Read more about male infertility assessment.

Testing related to ovarian insufficiency

For some women with premature ovarian insufficiency, chromosome testing and FMR1 premutation testing may be recommended. An FMR1 finding can have implications for both reproductive planning and family members, making genetic counselling especially important.

Carrier screening

Carrier screening checks whether someone carries a gene change linked to an inherited condition. Carriers often have no symptoms. Thalassaemia is one relevant example for Indian couples, although screening choices depend on medical history and counselling.

If one partner is a carrier, testing the other partner may be recommended. Being a carrier does not automatically mean that your child will be affected.

What happens before, during, and after testing?

Before the test: history, counselling, and consent

Your consultation may cover fertility reports, pregnancy losses, childhood illnesses, and inherited conditions in the family. Bring any previous genetic reports, including reports from relatives if available and shared with their permission.

Pre-test counselling should explain the purpose, possible results, limitations, and implications for relatives. You should also understand how your information will be stored and shared. Testing is a personal decision that should be made with informed consent.

During the test: a simple sample collection

Most tests on prospective parents use a blood sample; some use saliva or a cheek swab. Preparation depends on the test and laboratory. Many genetic tests do not require fasting, but confirm the instructions before your visit.

Different tests take different lengths of time. Ask when to expect the report and how the clinic will arrange your follow-up discussion.

After the test: interpreting the report

A result may identify a relevant genetic change, find no change within the test’s scope, or show a finding whose meaning remains uncertain. A negative result does not rule out every genetic cause of infertility or every inherited condition.

An uncertain finding should not be treated as a definite diagnosis. Your doctor or genetic counsellor can explain whether further testing, family information, or later review might help.

How is embryo genetic testing different?

Preimplantation genetic testing, or PGT, examines cells sampled from embryos created through IVF. It is different from testing a parent’s blood or saliva and requires IVF even if a couple can conceive naturally.

• PGT-M: Tests for a specific inherited condition when the relevant disease-causing gene change is known.
• PGT-SR: Looks for chromosome imbalances related to a known structural rearrangement in a parent.
• PGT-A: Screens for abnormalities in chromosome number. It does not test for all genetic diseases.

PGT-A is not routinely recommended for every person undergoing IVF. Its potential benefits and limitations should be considered individually. You can explore preimplantation genetic testing and discuss which approach, if any, fits your situation.

Embryo testing has limitations: sometimes no suitable embryo is identified, or a result is inconclusive or complex. It cannot guarantee implantation, an ongoing pregnancy, or a child without health problems. Prenatal screening and diagnostic options should still be discussed during pregnancy, including confirmation where appropriate after PGT.

In India, testing must follow applicable legal requirements. Sex selection for non-medical reasons is prohibited.

How can results guide your next steps?

Depending on the findings, options may include trying naturally with appropriate counselling, prenatal diagnosis during pregnancy, IVF with targeted embryo testing, or donor eggs or sperm. Not every result changes treatment, and no option is right for every family.

Some findings may also suggest health assessments for the person tested or voluntary counselling for relatives. A genetic result is not anyone’s fault and should never become a reason to blame either partner.

If IVF is being considered, understanding the IVF treatment process can help you see where genetic testing might fit.

Questions to ask at your consultation

• Why are you recommending this particular test?
• How could the result change our treatment or pregnancy planning?
• What can the test miss, and could it produce an uncertain result?
• Will both partners need testing?
• Can we speak with a genetic counsellor before deciding?
• Who will explain the report and help us plan our next steps?

You do not need to make every decision at once. Taking time to understand the recommendation can help you choose testing that is relevant rather than simply requesting more investigations.

For guidance on whether fertility genetic testing may be appropriate for you, book an appointment at PRAVI IVF & Fertility Centre, Kanpur, or WhatsApp +91 80091 50040. Bring your previous reports so your consultation can focus on your individual needs.