Premarital Screening Tests in Pakistan: Thalassemia and More

The premarital screening tests that matter most for couples in Pakistan are a blood count with Hb electrophoresis (to find thalassemia carriers), hepatitis B surface antigen, anti HCV, an HIV test and blood group with Rh. Thalassemia carrier testing is the one that changes decisions: if both partners carry beta thalassemia, each pregnancy has a 1 in 4 chance of a child with thalassemia major, and knowing before nikah gives a couple time to plan.

Why thalassemia testing comes first in Pakistan

Thalassemia is inherited. A carrier (thalassemia minor or trait) has one changed gene, usually feels completely well, and may only show slightly small red cells on a blood count. The NHS explains that being a beta thalassaemia carrier won’t generally cause health problems, but a child can only be born with thalassaemia major if they inherit the gene from both parents. When both parents are carriers, the chance is 1 in 4 in every pregnancy.

A 2022 review of thalassemia in Pakistan estimates the beta thalassemia trait frequency at about 5 to 7 percent, which means more than 10 million carriers, and says thousands of children are diagnosed with thalassemia major each year. Most of those children will need blood transfusions every few weeks for life. That is the reason this test belongs at the top of the list, ahead of every optional extra a lab package might offer, and the reason it should be done early, while a result can still shape plans calmly rather than arrive as a shock a few weeks before the mehndi.

Does cousin marriage raise the risk?

Yes. Honestly, it can. Relatives share more genes, so if a gene like beta thalassemia runs in a family, two cousins are more likely to both carry it than two unrelated people. That doesn’t make every cousin marriage risky, and plenty of unrelated couples turn out to be carriers too. The practical answer is the same either way: test both partners. A family history of thalassemia, anaemia that never improved with iron, or a child who needed regular transfusions makes testing even more important.

How do the thalassemia tests work?

1. CBC: a carrier often has a low MCV and MCH (small, pale red cells) with a near normal haemoglobin. Iron deficiency can look similar.
2. Hb electrophoresis or HPLC: separates the haemoglobin types. A raised HbA2 is the classic sign of beta thalassemia trait. How to read that report is in our Hb electrophoresis guide.
3. Iron check if needed: severe iron deficiency can lower HbA2 and blur the result, so labs sometimes ask for ferritin.

Both partners are thalassemia minor: what now?

A carrier result is not a reason to panic and is not, by itself, a reason to cancel. It is a reason to see a haematologist or a genetic counsellor before pregnancy. Options that couples discuss include:

• Prenatal diagnosis: testing the pregnancy early (by chorionic villus sampling) to find out whether the baby is affected, then making an informed decision with doctors and, for many families, their scholars.
• IVF with embryo testing: available at some centres, costly, and not suitable for everyone.
• Choosing not to marry: some families decide this, and that is their right too.

Religious questions about these options belong with a scholar you trust. Medical facts, including the 1 in 4 chance each pregnancy, don’t change with luck: having one healthy child doesn’t lower the chance for the next.

Why hepatitis B, hepatitis C and HIV are on the list

These infections often cause no symptoms for years, spread through blood and sexual contact, and can pass from mother to baby. Finding one before marriage means:

• Hepatitis B: the partner who tests negative can be vaccinated before marriage, and a baby born to a positive mother gets vaccine and protection at birth.
• Hepatitis C: modern treatment can often clear the virus, so a positive anti HCV is followed by a PCR test to see if the virus is active (see anti HCV positive, what next).
• HIV: effective treatment protects the person’s health and greatly reduces the chance of passing it to a partner or baby. The HIV report guide explains reactive and non reactive results.

The broader testing and vaccination picture is in hepatitis B and C in Pakistan.

Blood group and the optional extras

Now blood group. It matters mainly for pregnancy. If the woman is Rh negative and the man Rh positive, the antenatal team will monitor and give protection at the right times; it is not a reason to avoid marriage. The details are in the Rh negative mother guide.

Some packages add sugar, thyroid, rubella immunity, syphilis or semen analysis. Rubella immunity is worth checking for women, since vaccination should happen before pregnancy, not during it. The rest depend on personal history; ask a doctor rather than buying the biggest package.

Is premarital testing required by law?

Rules differ by province and have changed over time. The 2022 review notes that legislation for premarital thalassemia screening was approved in Sindh, Khyber Pakhtunkhwa and Balochistan, with implementation remaining the problem. Check the current requirement with your nikah registrar or local health department. Whatever the law says, testing is worth doing for your own planning.

Privacy and family pressure

Results are private. They belong to the person tested. They are shared between the couple first, and with families only if both agree. A positive hepatitis or HIV result should be discussed with a doctor before anyone else, so the facts come before the gossip. More test explainers are collected under Lab Reports Decoded.

Premarital test questions

Sources

• NHS: Thalassaemia
• Khaliq S. Thalassemia in Pakistan. Hemoglobin 2022