Test Overview
Test Methodology

Kinetic Spectrophotometry (SP)

Test Usage

Evaluation of individuals with Coombs-negative nonspherocytic hemolytic anemia.

Reference Range *

8.8 - 13.4 U/g hemoglobin. Abnormal values are usually 0 - 20% of normal mean.

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

Test Limitations

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

Test Details
Days Set Up
Monday - Sunday
Analytic Time

2 - 5 days

Soft Order Code
MiChart Code
G-6-PD, Erythrocytes
  • Glucose-6-Phosphate Dehydrogenase Deficiency
  • G6PD, Quantitative
  • Glucose-6-Phosphate Dehydrogenase, Quantitative
  • G6PDQ
Reference Laboratory
Mayo G6PD (8368)
Special Testing
Specimen Requirements
Collection Instructions

Collect specimen in a yellow top (ACD) solution B tube preferred; Lav top (EDTA) or ACD solution A are acceptable. Send 6.0 mL of intact whole blood. Refrigerate. Do not transfer blood to other containers.

Alternate Specimen
Lavender top (EDTA) and ACD- Solution A are also acceptable.
Red Top Tube
Normal Volume
6 mL ACD (solution B) whole blood preferred; Lav top (EDTA) or ACD solution A are acceptable
Minimum Volume
1 mL ACD (solution B) whole blood preferred; Lav top (EDTA) or ACD solution A are acceptable
Additional Information

Test sent to Mayo Medical Laboratories.

CPT Code
Fee Code