What genotype screening can and cannot tell prospective partners.

Why this matters

Sickle cell disease is inherited. A person’s haemoglobin genotype helps indicate whether they have sickle cell disease or carry a trait that could be passed to children. Commonly discussed results include AA, AS and SS, though other variants exist.

What to understand

If both prospective parents carry a relevant sickle cell trait, each pregnancy can have a chance of producing a child with the disease. For two AS parents, the usual probabilities per pregnancy are 25% AA, 50% AS and 25% SS. These probabilities reset with each pregnancy.

Practical steps

A screening test should be interpreted by a qualified healthcare professional. Where results are uncertain, confirmatory testing and genetic counselling may be appropriate. Testing is about informed reproductive choices, not stigma or discrimination.

What to do next

Couples should discuss their results early, seek counselling and understand the options available to them. A genotype result does not define a person’s worth or determine the quality of a relationship.

Key takeaway

Use reliable information, check details independently and seek qualified professional help when a decision involves legal, financial, medical or personal safety risks.