Lab test
Glucose 6-Phosphate Dehydrogenase (G6PD) Test, Quantitative
This page explains the glucose 6-phosphate dehydrogenase (g6pd) test, quantitative, what it measures, and how to order it. The Glucose 6-Phosphate Dehydrogenase (G6PD) Test measures the level of G6PD enzyme in your blood.
What this test is
The G6PD Test is a quantitative blood test that evaluates the level of the G6PD enzyme. This enzyme is important for the proper functioning of red blood cells. Low levels of G6PD can lead to red blood cell breakdown.
What it measures
- G6PD enzyme level — reflects the enzyme activity in red blood cells
What the test involves
The test involves a standard blood draw, usually from a vein in your arm. A healthcare professional will collect the blood sample for analysis.
Why it is often ordered
Clinicians typically order this test to check for G6PD deficiency, which can cause certain types of anemia. It may also be ordered if there is a family history of G6PD deficiency.
Preparation
Preparation for the test may vary, so it is important to follow the specific instructions provided by the lab where your sample will be collected.
How results are reported
Results are reported as the level of G6PD enzyme in the blood. Reference ranges can vary between laboratories, so it's important to discuss your results with your healthcare provider.
Before you go
- Sample collection requirements
- Any dietary restrictions
- Turnaround time for results
FAQ
Frequently asked questions
What is G6PD deficiency?
G6PD deficiency is a genetic condition where the body lacks enough of the G6PD enzyme, leading to the breakdown of red blood cells under certain conditions.
Can I eat or drink before the test?
You may be advised to avoid certain foods or drinks before the test. Check with the lab for specific instructions.
How long does it take to get results?
Results are typically available within 1-3 business days, but this can vary depending on the laboratory.
Are there any risks associated with the test?
The G6PD test involves a blood draw, which carries minimal risks such as slight bruising or discomfort at the puncture site.
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Locations
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