Days Set Up
Monday - Saturday
Analytic Time

2 - 4 days

MiChart Code
Soft Order Code

Test Updated:


Looking to order a test?

We’ve provided helpful links to make ordering easy.

Find a Requisition

All specimens should be accompanied by a requisition.

Submitting Specimens

Learn about how to properly label and where to ship specimens.

Order Kits and Supplies

MLabs provides all the supplies necessary for the collection of specimens.

Test FAQ

Visit our provider FAQ and learn about common questions to ordering tests.

Test Overview

Test Methodology


Test Usage

Diagnosing methemoglobinemia and sulfhemoglobinemia. Identifying cyanosis due to other causes, such as congenital heart disease.

Reference Range

METHEMOGLOBIN: 0-11 months: not established; > or =1 year: 0.0-1.5% of total hemoglobin
SULFHEMOGLOBIN: 0-11 months: not established; > or =1 year: 0.0-0.4% of total hemoglobin

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Specimen Requirements

Collection Instructions

Collect specimen in a lavender top tube. Send intact whole blood to Specimen Processing refrigerated. Must be received at testing laboratory within 72 hours of collection.

Lavender Top Tube
Normal Volume
7 mL EDTA whole blood
Minimum Volume
1 mL EDTA whole blood

Billing Information

CPT Code
83050, 83060
Pro Fee Code
Insurance Auth Info

Have More Questions?

Explore our helpful billing resources:

Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.