G-6-PD, Qualitative Screen

Test Overview

Test Methodology

Trinity Biotech Qualitative Screening Kit-using long wave UV light

Test Usage

Check for G-6-PD deficiency in patients with unexplained episodes of hemolysis. Screen certain ethnic groups who may be given drugs that would produce hemolytic crises.

Reference Range*

Normal by fluorescent screen

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Limitations

This procedure can only differentiate between normal and grossly deficient samples. A G6PD blood enzyme screen performed after a hemolytic episode often will not detect G6PD deficiency, even if present, because the most deficient cells have been destroyed. Likewise, patients with high reticulocyte counts and/or those who are status post red blood cell transfusion may appear G6PD normal, masking a deficiency state.

Test Details

Days Test Performed

Thursday, 9:00am

Analytic Time

2 hours

Soft Order Code

G6PD

MiChart Code

Glucose 6 Phosphate Dehydrogenase

Synonyms

G6PD, Qualitative
Glucose-6-Phosphate Dehydrogenase Deficiency
Glucose-6-Phosphate Dehydrogenase Screen
RBC Enzyme Screen, G-6-PD
G6PD QUALITATIVE
G6PD

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Laboratory

Hematopathology

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Specimen Requirements

Offsite Collection Instructions

Collect specimen in a Green top sodium heparin, lavender top EDTA or yellow top ACD A or B tube or Microtainer® tube. Refrigerate at 2-8 C and send intact specimen within 3 days. Do not freeze.

Container

Normal Volume

3 mL whole blood

Minimum Volume

0.5 mL whole blood

Additional Information

If G-6-PD result is inconclusive or negative, G-6-PD Quantitative testing is recommended if indicated, sent to Mayo Medical Laboratories (test 8368). This test requires an ACD (Solution B) specimen.