Lactic Acid Dehydrogenase Isoenzymes

Test Overview

Test Methodology

Photometric Rate

Test Usage

Evaluation of myocardial infarction and liver disease.

Reference Range *

LD Isoenzymes: I (fast band): 17.5 - 28.3%; II: 30.4 - 36.4%; III: 19.2 - 24.8%; IV: 9.6 - 15.6%l V (slow band): 5.5 - 12.7%. Total LD level is also reported.

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

Test Details

Days Set Up

Monday - Friday

Analytic Time

3 - 7 days

Soft Order Code

LD

MiChart Code

LDH (Lactate Dehydrogenase)

Synonyms

LDH Isoenzymes
Lactate Dehydrogenase Isoenzymes
LD
Lactate Dehydrog Isoenzymes

Laboratory

Sendout

Reference Laboratory

Mayo LD_I (8679)

Section

Special Testing

Specimen Requirements

Collection Instructions

Collect specimen in a red top or SST tube. Centrifuge and aliquot serum into a plastic vial within 2 hours of collection. Store and transport at room temperature. Specimen cannot be refrigerated >48 hours or frozen.

Normal Volume

2 mL serum, divided into 2 aliquots of 1 ml each

Minimum Volume

0.75 mL serum divided into 2 aliquots of 0.3 each

Storage Temperature

Ambient preferred, refrigerated <48hrs only

Additional Information

Includes total LDH. Test sent to Mayo Medical Laboratories.

Billing

CPT Code

83615 LDH, 83625 Isoenzymes

Fee Code

22254

LOINC

S-3453