Kinetic Spectrophotometry (KS)
Confirming cases of heterozygous or homozygous methemoglobin reductase deficiency; genetic studies in families with methemoglobin reductase deficiency.
6.6 - 13.3 U/g hemoglobin
* Reference ranges may change over time. Please refer to the original patient report when evaluating results.
Days Test Performed
2 - 10 days
Soft Order Code
Cytochrome B5 Reductase
Methemoglobin Reductase, Erythrocytes
Mayo METR (9322)
Looking to Order a Test?
We’ve provided helpful links to make ordering easy.
All specimens should be accompanied by a requisition.
Learn about how to properly label and where to ship specimens.
MLabs provides all the supplies necessary for the collection of specimens.
Visit our provider FAQ and learn about common questions to ordering tests.
Offsite Collection Instructions
Collect blood in an yellow top (ACD) solution B tube. Refrigerate intact specimen; do not freeze.
6 mL ACD (solution B) whole blood
1 mL ACD (solution B) whole blood
Test sent to Mayo Medical Laboratories.