G6PD, Qualitative (Glucose-6-Phosphate Dehydrogenase) Test
- Category
- Blood
- Sample
- Blood sample taken from a vein in your arm
- Reports () Terms & Conditions Report time varies with time of sample collection.
- In 3 days
- Fasting
- No Fasting
- Age
- 5+ Years
Uses a qualitative screening method to check the activity of G6PD, an enzyme that protects red blood cells from damage.
G6PD deficiency can cause red cells to break down (haemolysis) after certain medicines (e.g., primaquine, dapsone, some antibiotics), fava beans or infections. It is checked before primaquine for malaria and in newborn jaundice.
Tiredness, weakness, pale skin, fever, frequent infections, easy bruising or bleeding; routine health check-ups.
No fasting needed.
This article is for general information and education only. It is not medical advice, does not create a doctor–patient relationship, and is not a substitute for consultation with a qualified doctor who has assessed your individual situation. Never delay seeking medical advice because of something you have read here.
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Avoid triggers such as fava beans, mothballs (naphthalene) and specific medicines. Always tell your doctor and pharmacist about the deficiency.
No fasting is needed. You can eat and drink normally unless your doctor has advised otherwise.
Blood sample taken from a vein in your arm.
Usually within 31–55 hours after the sample reaches the lab. You will receive the report online.