Clinics and Departments

Laboratory Services

Lab Dept:

Hematology

Test Name:

G6PD

General Information

Lab Order Codes:

G6P

Synonyms:

Glucose-6-Phosphate Dehydrogenase Quantitative, Erythrocytes; G-6-PD Erythrocytes; G-6-PD

CPT Codes:

82955 - Glucose-6-Phosphate Dehydrogenase; quantitative

Test Includes:

Glucose-6-Phosphate Dehydrogenase level reported in U/g hemoglobin.

Logistics

Test Indications:

Useful for evaluation of individuals with Coombs-negative non-spherocytic hemolytic anemia

Lab Testing Sections:

Hematology - Sendouts

Referred to:

Mayo Medical Laboratories (MML Test G6PD/8368)

Phone Numbers:

MIN Lab: 612-813-6280

STP Lab: 651-220-6550

Test Availability:

Daily, 24 hours

Turnaround Time:

2 – 4 days, test is set up Monday - Saturday

Special Instructions:

Special collection tube required, see Container.

Specimen

Specimen Type:

Whole blood

Container:

Yellow top tube (ACD- solution B), tubes are available from the laboratory. Alternate: Lavendar (EDTA) top tube

Draw Volume:

6 mL (Minimum: 1 mL) blood

Processed Volume:

Same as Draw Volume

Collection:

Routine venipuncture

Special Processing:

Lab Staff: Do not centrifuge. Specimen should remain in its original collection tube. Do not transfer to other containers. Store and ship at refrigerated temperatures. Forward promptly.

Specimen can not be frozen.

Patient Preparation:

None

Sample Rejection:

Specimen frozen at any time after collection; gross hemolysis; mislabeled or unlabeled specimens

Interpretive

Reference Range:

8.8 – 13.4 U/g Hb
Note: Abnormal values are usually 0-20% of normal mean.

Limitations:

In African-Americans with G-6-PD A-variant, normal values may be measured for several weeks following hemolysis. This is not the case with other G-6-PD variants that predispose to hemolysis.

Methodology:

Kinetic Spectrophotometry (SP)

References:

Mayo Medical Laboratories January 2012

Updates:

8/25/2010: Updated units and reference range.



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