Good to knowOne result rarely tells the whole story. Your provider looks at your results together with your symptoms, exam, and other tests.
What the test is
It's more common in people of African, Mediterranean, and Asian descent.
Why it's done
- Episodes of red cell breakdown with dark urine or yellow skin
- Before some medicines, like primaquine or dapsone
- Newborn jaundice
Getting ready and what happens
- Testing during or right after a breakdown episode can give a falsely normal result.
How the test is done
- A health worker cleans the skin, puts a band around your arm, and draws blood from a vein with a small needle. It takes a few minutes.
What the results mean
Low
You have G6PD deficiency. You'll get a list of medicines and foods to avoid.
Questions to ask your provider
- What do my results mean for me?
- Do I need to repeat this test or have other tests?
Risks
A blood draw is very safe. You may have slight pain or a small bruise where the needle went in.
Related conditions
Related tests
Sources
Last updated 2026-11-13.