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G6PD test

The G6PD test looks at an enzyme that protects red cells. It is done for: before primaquine for malaria, newborn jaundice.

General health information, not a diagnosis. In an emergency, call 102. Always consult a qualified health professional.

Why it is done

Before primaquine for malaria, newborn jaundice.

Preparation

No fasting needed. Laboratory-specific; see the reference range on your report. High or positive may mean: Normal. Low or negative may mean: Deficiency: some medicines and foods can break red cells. General information, not a diagnosis. Results must be interpreted by a qualified health worker.

What it measures

An enzyme that protects red cells.

Sample type

Blood

If the result is high

Normal.

If the result is low

Deficiency: some medicines and foods can break red cells.

Reference ranges vary by lab, age and sex — always use the range printed on your own report.

Consult a doctor to interpret results — a single test does not make a diagnosis.

Related conditions

entry-health-condition-malaria

Where to get this near you

Care near you

Uses your location once to list the nearest facilities. Nothing is stored.

Common questions

What does the G6PD test measure?
An enzyme that protects red cells.

Why is the G6PD test done?
Before primaquine for malaria, newborn jaundice.

Do I need to fast for the G6PD test?
No fasting needed.

What does a high or positive G6PD test mean?
Normal.

What does a low or negative G6PD test mean?
Deficiency: some medicines and foods can break red cells.

What is the normal range for the G6PD test?
Laboratory-specific; see the reference range on your report.

Why is G6PD test done?
Before primaquine for malaria, newborn jaundice.

Do I need to prepare or fast for G6PD test?
No fasting needed. Laboratory-specific; see the reference range on your report. High or positive may mean: Normal. Low or negative may mean: Deficiency: some medicines and foods can break red cells. General information, not a diagnosis. Results must be interpreted by a qualified health worker.

SI text CC BY 4.0; decoder reference data (cited per range); LOINC codes free with attribution (notice included).

Sources: SI health summary (own words); MedlinePlus Lab Tests and CDC as references

Emergency — call102