- YLDIS
LDH (Lactate Dehydrogenase) Isoenzymes
Specimen:
Test Code
YLDIS
Specimen Name
LDH (Lactate Dehydrogenase) Isoenzymes
Collect
1-SST
Also acceptable Plain Red Top
Also acceptable Plain Red Top
Submit
1 mL (Min: 0.6 mL) Serum, Room temperature.
Special Handling
Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. If collecting red top serum, transfer serum to a transport tube. Do not refrigerate or freeze
Rejection Criteria
Hemolyzed specimens.
Stability
Ambient: 1 week; Refrigerated: Unacceptable; Frozen: Unacceptable
Methodology
Quantitative Enzymatic Assay / Electrophoresis
Performed
Sunday - Saturday
Reported
1-3 days
CPT Codes
- 83625
- 83615
Components
—
Additional Information
LD-1 and LD-2 are elevated in hemolyzed specimens and serum which has not been separated from cells. LD-3, LD-4, and LD-5 are labile at low temperatures, and are erroneously low in specimens that have been refrigerated or frozen.
Do not use to detect myocardial injury. In rare cases, this test may be used to evaluate elevated lactate dehydrogenase associated with noncardiac muscle injury. Troponin testing is recommended for diagnosis and management of acute coronary syndrome.
Disclaimer:
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Common Lab Definitions
- Serum
- Plasma
- STT