Days Set Up
Monday - Friday
Analytic Time

3 - 7 days

Soft Order Code

Test Updated:


L-asparaginase Assay for Leukemia Patients

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Test Overview

Test Methodology

Spectrophotometry/absorbance based enzyme-coupled kinetic reaction.

Test Usage

Used to monitor Asparaginase therapy for sufficient enzyme activity, to assess silent inactivation by patient sensitization. Only experienced physicians treating patients with asparaginase should interpret whether the asparaginase activiy level is adequate. There are no established treatment guidelines. The decision to modify the asparaginase treatment to achieve a target level must be made by the physician.

Reference Range

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

Specimen Requirements

Collection Offsite

Collect specimen in a red top or SST tube. Allow to clot at room temperature for 30 minutes, but no longer than 60 minutes. Centrifuge, aliquot serum to a plastic screw capped leakproof tube, and freeze.

Yellow Top Tube
Normal Volume
2 mL serum
Minimum Volume
0.2 mL serum

Billing Information

CPT Code
82657 x2
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.