Days Set Up
Daily, 24 hours
Analytic Time

2 hours

Soft Order Code

Test Updated:


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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

Hexokinase, NADH Endpoint

Test Usage

Determine glucose level, monitor insulin therapy, evaluate carbohydrate metabolism.

Reference Range

Fasting: <1 year: 40 - 120 mg/dL, 1-4 years: 50 - 130 mg/dL, 5-11 years: 50 - 135 mg/dL, 12-150 years: 73 - 100 mg/dL. 1 Hr Postprandial: 50 gm load: <135 mg/dL, 100 gm load: <190 mg/dL. 2 Hr Postprandial: (75 gm load): Normal <140 mg/dL, Impaired 140 - 200 mg/dL, Provisional Diagnosis >200 mg/dL.

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

Specimen Requirements

Collection Offsite

Collect specimen in an SST tube depending on the measurement requested (random, fasting, 1 hour postprandial or 2 hour postprandial). Centrifuge within 4 hours of collection, aliquot serum into a plastic vial and refrigerate. If specimen cannot be centrifuged at client site, please arrange for delivery to MLabs within 3 hours of specimen collection.

Yellow Top Tube
Normal Volume
0.5 mL serum
Minimum Volume
0.25 mL serum

Billing Information

CPT Code
82947 GLUC, 82950 GLUC1PP/GLUC2PP
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.