Test Overview

Test Methodology

Rate (L-Lactate to Pyruvate at 340 nm)

Test Usage

Differential diagnosis of cardiac and liver disorders

Reference Range*

Age 1-4 years: 150 - 300 IU/L, 5-11 years: 140 - 280 IU/L, 12-150 years: 120 - 240 IU/L.

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

Test Details

Days Test Performed

Daily, 24 hours

Analytic Time

4 hours

Soft Order Code


MiChart Code

LDH (Lactate Dehydrogenase)



Lactate Dehydrogenase

+ See More


Chemical Pathology

STAT Availability

STAT requests for this test will be performed on a STAT basis (supervisory staff approval is not required).

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.

Specimen Requirements

Offsite Collection Instructions

Collect specimen in an SST tube. Centrifuge, aliquot serum into a plastic vial and refrigerate. Avoid hemolysis of specimen during collection.


Yellow Top Tube

Normal Volume

0.5 mL serum

Minimum Volume

0.25 mL serum

Billing Information

Fee Codes

CPT Code




Have More Billing Questions?

Explore our helpful billing resources:

Billing Resources

Billing FAQ