How effective is pre-marital screening for thalassaemia carrier?

Screening often looks at red blood cell size and haemoglobin types. A carrier may have no symptoms, or may have mild blood-count changes that resemble iron deficiency. Because these findings overlap, a clinician may recommend iron studies or a more specific haemoglobin test before drawing a conclusion.

The significance depends on both partners. Two carrier results do not diagnose an affected pregnancy, but they do indicate that a genetics professional should explain the particular variants and available testing. Some uncommon variants need molecular testing to clarify the result.

Complete screening for both partners before pregnancy when feasible. Bring any prior diagnosis of anaemia, details of treatment with iron and family records showing thalassaemia or regular transfusions.

Do not start iron solely because a screening report shows small red cells. Ask whether iron deficiency has been confirmed. If both partners carry relevant variants, arrange counselling before conception or early in pregnancy to discuss diagnostic choices.

Ask for prompt review if a report is labelled abnormal, inconclusive or suggestive of a haemoglobin variant, particularly when both partners are being screened. Severe tiredness, breathlessness at rest, chest pain or fainting needs urgent assessment and should not be attributed to carrier status without examination.

Does my blood count suggest thalassaemia trait, iron deficiency or both? Which haemoglobin types were measured? Does my partner need a specific test? Would genetic counselling or pregnancy testing be appropriate for us?