Lactate Dehydrogenase Isoenzymes

Test Code

597

CPT Code(s)

83625

Test Code

597

CPT Code(s)

83625

This test is not available in all locations. Please provide SERVICE AREA INFORMATION to confirm Test Code for the lab that services your account or to find available tests you can order.

In-home collection may be available in your area for purchase through Quest Mobile.

Clinical Significance

Lactate Dehydrogenase Isoenzymes - Lactate dehydrogenase (LD) is present in many different organs and tissues such as liver, heart, muscles, kidney, lungs and blood. The usual designation of isoenzymes is LD-I, LDII, LD-III, LD-IV and LD-V. LD isoenzymes tissue specificity is derived from the fact that LD subunits are synthesized in well-defined ratios and could be used in investigating unexplained causes of Total LD elevations and detection of macro-LD. Do not use LD isoenzymes to detect myocardial injury.

Test Resources

None found for this test
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Test Details

Includes

LD1, LD2, LD3, LD4, LD5

Methodology

Electrophoresis

Reference Range(s)

LD1	18-32 %
LD2	29-42 %
LD3	14-30 %
LD4	6-13 %
LD5	5-18 %

Alternative Name(s)

LD Isoenzymes without Total LD,LDI

LOINC® Codes, Performing Laboratory

Service Area must be determined

Includes

LD1, LD2, LD3, LD4, LD5

Methodology

Electrophoresis

Reference Range(s)

LD1	18-32 %
LD2	29-42 %
LD3	14-30 %
LD4	6-13 %
LD5	5-18 %

Alternative Name(s)

LD Isoenzymes without Total LD,LDI

LOINC® Codes, Performing Laboratory

Service Area must be determined

Preferred Specimen(s)

2 mL serum

Minimum Volume

1 mL

Collection Instructions

Total Lactate Dehydrogenase results should be supplied by Client.
Centrifuge serum specimens within 1 hour of collection, transfer serum to a clean, plastic, screw-capped vial(s), and send at room temperature to the laboratory. Do not refrigerate or freeze specimens. Specimens cannot be shared, and no other tests should be ordered with Lactate Dehydrogenase Isoenzymes.

Transport Container

Transport tube

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days
Refrigerated: Unacceptable
Frozen: Unacceptable

Reject Criteria

Hemolysis • Received refrigerated • Received frozen

Setup Schedule

Service Area must be determined

Preferred Specimen(s)

2 mL serum

Minimum Volume

1 mL

Collection Instructions

Transport Container

Transport tube

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 7 days
Refrigerated: Unacceptable
Frozen: Unacceptable

Reject Criteria

Hemolysis • Received refrigerated • Received frozen

Setup Schedule

Service Area must be determined

This test is not available in all locations. Please provide ACCOUNT INFORMATION NEEDED to confirm Test Code for the lab that services your account or to find available tests you can order.

In-home collection may be available in your area for purchase through Quest Mobile.

Test Details

Clinical Significance

Test Resources

Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.

The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.

This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.

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