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The University of Chicago Medicine Laboratories

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Specimen Collection and Handling

Transfusion

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Mayo Clinic Laboratories

Test Code 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 transfer blood to other containers.


Secondary ID

607463

Method Name

Kinetic Spectrophotometry (KS)

Specimen Type

Whole Blood ACD-B

Specimen Minimum Volume

1 mL

Specimen Stability Information

Specimen Type Temperature Time
Whole Blood ACD-B Refrigerated 20 days

Reject Due To

Gross Hemolysis Reject

Reference Values

≥12 months: 40.0-58.0 U/g Hb

Reference values have not been established for patients who are younger than 12 months of age.

Performing Laboratory

Mayo Clinic Laboratories in Rochester

CPT Code Information

84087

Day(s) Performed

Tuesday, Thursday

Report Available

1 to 6 days

Forms

If not ordering electronically, complete, print, and send a Benign Hematology Test Request (T755) with the specimen.