Glucose-6-Phosphate dehydrogenase

This test measures the amount of G6PD in your blood. The normal range is 5–15 units/g of hemoglobin for adults, as American Board of Internal Medicine (Laboratory Test Reference Ranges) publishes it.

G6PD stands for glucose-6-phosphate dehydrogenase. It's an enzyme, a protein that speeds up certain chemical reactions in your body. It helps your red blood cells work properly. Red blood cells move oxygen from your lungs to every cell in your body. Your cells need oxygen to grow, reproduce, and stay healthy.

A G6PD test is used to check if you have an inherited G6PD deficiency.

Source: MedlinePlus, U.S. National Library of Medicine

Normal range

6 published ranges, each from a named source

515 units/g of hemoglobin drawn: all ages · American Board of Internal Medicine (Laboratory Test Reference Ranges)

Normal: 5–15 units/g of hemoglobin

Ranges from ARUP Laboratories Test Directory, American Board of Internal Medicine (Laboratory Test Reference Ranges).

All source ranges (6)

by lab, sex and age, as published ·

Source	Sex	Age	Range
American Board of Internal Medicine (Laboratory Test Reference Ranges)	All	all ages	5–15 units/g of hemoglobin
ARUP Laboratories Test Directory	All	≤ 8 d	16.4–24.1 U/g Hb
ARUP Laboratories Test Directory	All	8 d – 30 d	13.6–23.9 U/g Hb
ARUP Laboratories Test Directory	All	30 d – 6 mo	11.5–21.5 U/g Hb
ARUP Laboratories Test Directory	All	7 mo – 1 y	10.3–17.9 U/g Hb
ARUP Laboratories Test Directory	All	1 y – 17 y	9.7–16.9 U/g Hb

What a high or low result can mean

LOINC2HPO, Monarch Initiative

A low result Decreased erythrocyte glucose-6-phosphate dehydrogenase concentration

This is reference information, not a diagnosis: only a clinician can interpret your result in context.

Sample: Whole blood · LOINC
Code: LOINC 32546-4 · units/g of hemoglobin
Also called: G-6-PD, G6PD, G6PDH, GPD, Glucose-6-PD

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