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Lab Test Dictionary

Cytochrome b5 Reductase Enzyme Activity, Blood (METR1)

Methodology

Kinetic Spectrophotometry (KS)


Synonyms

Cytochrome b5 Reductase; Diaphorase; Ferrihemoglobin Reductase; Methemoglobin Reductase; Methemoglobin Diaphorase (Methemoglobin Reductase)

Specimen Type

Whole Blood ACD-B

Performing Lab

Mayo


Lab Test Days

Performed weekly

Standard TAT

1 to 6 days


Collection Information

Specimen Required

6 mL Whole blood collected in Yellow top (ACD); Also acceptable: Lavender top (EDTA);

Container Type

Yellow top ACD-B


Processing Information - Lab Use Only

Transport Temperature

Refrigerated

Specimen Stability

18 days

Rejection Criteria

Gross hemolysis

Test Volume Required

6 mL

Minimum Test Volume

1 mL

Processing Instructions

Send specimen in original tube. DO NOT transfer blood to other containers


Comments

Patient's age is required. If not ordering electronically, complete, print, and send a Benign Hematology Test Request (T755) with the specimen.


CPT Codes

82657


Revised

10-27-23

Initials

pxt