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Labcorp Oklahoma, Inc.
Test Directory


Lactate Dehydrogenase (LDH)

Order Name LDH
Test Number: 2003860
Revision Date 11/15/2023
Test Name Methodology LOINC Code
Lactate Dehydrogenase (LDH)
Lactate - Pyruvate (NAD) 2532-0 
Specimen Specimen Volume (min) Specimen Type Specimen Container Transport Environment
Preferred 1 mL (0.5) Serum Clot Activator SST Refrigerated
Alternate 1 1 mL (0.5) Plasma Lithium Heparin PST (Light Green Top) Refrigerated
Instructions Non hemolyzed specimen. Specimen stability: Ambient 7 days, Refrigerated 7 days, Frozen 6 weeks

If collecting plasma specimens it is highly recommended for the plasma to poured off immediately.
Testing Schedule Daily 
Expected TAT 1-2 days  
Clinical Use Useful for evaluating a possible diagnosis of MI after the first 24 hours; however, this use of LD has been replaced by Troponin I determinations. LD may also be useful in liver disease and conditions causing hemolysis. 
CPT Code(s) 83615
Lab Section Chemistry