Days Set Up
Monday - Saturday
Analytic Time

2 - 5 days

MiChart Code
Pyruvate Kinase, RBC
Soft Order Code

Test Updated:


Pyruvate Kinase (PK), Erythrocytes

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All specimens should be accompanied by a requisition.

Submitting Specimens

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

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Test Overview

Test Methodology

Kinetic Spectrophotometry

Test Usage

Workup of cases of nonspherocytic hemolytic anemia, for a family workup to determine inheritance pattern (PK deficiency is autosomal recessive), and for genetic counseling.

Reference Range

6.7 - 14.3 U/g hemoglobin

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

Specimen Requirements

Collection Onsite

Do not transfer blood to other containers.

Collection Offsite

Collect specimen in a yellow top (ACD) solution B tube. Send 4.0 mL (minimum 1 mL) of intact whole blood. Refrigerate. Do not transfer blood to other containers.

Normal Volume
6 mL ACD (solution B) whole blood
Minimum Volume
1 mL ACD (solution B) whole blood

Billing Information

CPT Code
Pro Fee Code

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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.