Home
HelpTest ID GPI1 Glucose Phosphate Isomerase Enzyme Activity, Blood
Specimen Required
Container/Tube:
Preferred: Yellow top (ACD solution B)
Acceptable: Lavender top (EDTA)
Specimen Volume: 6 mL
Collection Instructions: Send whole blood in original tube. Do not aliquot.
Secondary ID
607463Useful For
Evaluating individuals with Coombs-negative chronic hemolysis
Specimen Type
Whole Blood ACD-BSpecimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Whole Blood ACD-B | Refrigerated | 20 days |
Reject Due To
| Gross hemolysis | Reject |
| Fully clotted | Reject |
Reference Values
≥12 months: 40.0-58.0 U/g Hb
Reference values have not been established for patients younger than 12 months.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
CPT Code Information
84087
Day(s) Performed
Tuesday, Thursday
Report Available
1 to 6 daysForms
If not ordering electronically, complete, print, and send a Benign Hematology Test Request (T755) with the specimen.