Update Type: Test Discontinued
Test Updated: 01/17/2024
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
MiChart Code
LDH (Lactate Dehydrogenase)
  • LDH Isoenzymes
  • Lactate Dehydrogenase Isoenzymes
  • LD
  • Lactate Dehydrog Isoenzymes
Reference Laboratory
Mayo LD_I (8679)
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.

CPT Code
83615 LDH, 83625 Isoenzymes
Fee Code