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3003818
Cytochrome b5 Reductase Enzyme Activity
CYTOB5 RED
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
6-10 days
Reference Interval
By Report
Interpretive Data
Compliance Category
Performed by non-ARUP Laboratory
Note
Hotline History
Hotline History
Date of Change
Test Name Change
Methodology
Performance/Reported Schedule
Specimen Requirements
Reference Interval
Interpretive Data
Note
CPT Code
Component Change
Other Interface Change
New Test
Inactive
N/A
CPT Codes
82657
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
