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 Set Up
Thursday, 9:00am
Analytic Time

2 hours

Soft Order Code
MiChart Code
Glucose 6 Phosphate Dehydrogenase
  • G6PD, Qualitative
  • Glucose-6-Phosphate Dehydrogenase Deficiency
  • Glucose-6-Phosphate Dehydrogenase Screen
  • RBC Enzyme Screen, G-6-PD
  • G6PD
Specimen Requirements
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.

Normal Volume
3 mL whole blood
Minimum Volume
0.5 mL whole blood
Storage Temperature
Whole blood specimens are stable for one week when refrigerated at 2-8 C
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.

CPT Code
Fee Code