Days Set Up
Daily, 24 hours
Analytic Time

2 hours

MiChart Code
Lactic Acid
Soft Order Code

Test Updated:


Blood Lactate
Lactate Plasma

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Test Overview

Test Methodology

Colorimetric Enzyme Assay

Test Usage

The over-production or underutilization of lactate usually results in lactic acidosis. Increased lactate levels can occur due to tissue hypoxia, diabetes mellitus, malignancies, glycogen storage disease, metabolic acidosis, and ethanol, methanol or salicylate ingestion.

Reference Range

0.5-2.2 mEq/l (0.5-2.2 mMol/l)

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

Specimen Requirements

Collection Offsite

It is recommended to draw lactic acid without a tourniquet or immediately after applying the tourniquet. If the tourniquet is applied for an extended time, remove the tourniquet and let the blood circulate two minutes prior to retrying the draw. Collect specimen in gray top tube. Invert tube gently to mix. Place specimen on ice. Centrifuge, aliquot plasma into a plastic vial within 15 minutes of collection and freeze immediately.

Normal Volume
1 mL plasma
Minimum Volume
0.5 mL plasma

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.