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Test Code 111 Lactate Dehydrogenase (LD)

Additional Codes


PowerChart: Lactate Dehydrogenase (LDH) Level

MA Cerner: Lactate Dehydrogenase.(LD)

Specimen Requirement

0.5 mL of serum or plasma is required.

Additional Specimen Collection Information

Collect blood in a lithium heparin, green-top or red-top tube. PST and SST (gel tubes) are acceptable.Serum or plasma should be separated from contact with the cells within 2 hours of collection. Specimens not centrifuged within 4 hours of collection may be rejected. Refrigerated or frozen specimens are not recommended. Hemolyzed specimens are not acceptable. Samples with >3+ lipemia must be cleared prior to analysis.

Useful For

Investigation of a variety of diseases involving the heart, liver, muscle, kidney, lung, and blood

Monitoring changes in tumor burden after chemotherapy, although, lactate dehydrogenase elevations in patients with cancer are too erratic to be of use in the diagnosis of cancer


Testing is performed Monday through Sunday.

Routine: Typically completed within 4 hours after the specimen arrives at the testing site.

Expedite: Typically completed within 1 hour after the specimen arrives at the testing site.

STAT: Typically completed within 30 minutes after the specimen arrives at the testing site.

CPT Code Information

83615 Chemistry: Lactate dehydrogenase (LD,) (LDH)

LOINC Code Information

2532-0 Lactate Dehydrogenase [Enzymatic Activity/Volume] In Serum Or Plasma

Test Method

MercyOne: Enzymatic Rate Method; Beckman DXC880i

MA: Enzymatic Colorimetric Method; Roche Cobas 6000

Reference Values

MercyOne: 107-195 IU/L

Medical Associates: 
2 - 15 years: 120-300 U/L
Females > 15 years: 135-214 U/L
Males > 15 years: 135-225 U/L