3003818
print

Cytochrome b5 Reductase Enzyme Activity

CYTOB5 RED
Example Reports
High
Normal

Ordering Recommendation

Use to confirm cases of heterozygous or homozygous methemoglobin reductase deficiency.

New York DOH Approval Status

This test is New York state approved.

Specimen Required

Patient Preparation
Collect

Yellow (ACD solution A or B). Also acceptable: Lavender (EDTA).

Specimen Preparation

Transport 6 mL whole blood in the original tube. (Min: 1 mL)
Test is not performed at ARUP; separate specimens must be submitted when multiple tests are ordered.

Storage/Transport Temperature

Refrigerated.

Unacceptable Conditions
Remarks
Stability

Ambient: Unacceptable; Refrigerated: 18 days; Frozen: Unacceptable

Methodology

Quantitative Spectrophotometry

Performed

Varies

Reported

3-6 days

Reference Interval

By Report

Interpretive Data



Compliance Category

Performed by non-ARUP Laboratory

Note

Hotline History

N/A

CPT Codes

82657

Are you an ARUP Client? Click here for your pricing.

Components

Component Test Code* Component Chart Name LOINC
3003819 Cytochrome b5 Reductase Enzyme Activity 32703-1
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.

Aliases

Cytochrome b5 Reductase Enzyme Activity

Mayo Clinic Laboratories