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HelpEpic Test Code LAB97 Lactate Dehydrogenase, Isoenzymes
Performing Location(s)
ARUP
Ordering Recommendation
Do not use to detect myocardial injury. Troponin I and Troponin T (cTnT) 5th Generation are the recommended tests for diagnosis and management of acute coronary syndrome. In rare cases, this test may be used to evaluate elevated lactate dehydrogenase associated with noncardiac muscle injury.
Specimen Type
Serum
Preferred Container
Gold or Red Top Tube
Minimum Volume
1 mL serum
Storage Requirements
Room temperature
Specimen Stability
Ambient: 1 week
Refrigerated: Unacceptable
Frozen: Unacceptable
Transportation Needs
Room temperature
Causes for Rejection
Mislabeled or unlabeled specimen.
Less than 50% draw for Vacutainer tubes
Hemolyzed specimens
Frozen or Refrigerated sample recived
Reference Interval
LD-1: 14-27%
LD-2: 29-42%
LD-3: 18-30%
LD-4: 8-15%
LD-5: 6-23%
Lactate Dehydrogenase, Total:
0-1 month: 200-465 U/L
2-17 months: 200-450 U/L
18 months-10 years: 165-430 U/L
11-16 years: 127-287 U/L
17 years and older: 105-230 U/L
Note:
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.
Days of Analysis
Sun-Sat
Available STAT
No
Turnaround Time
1-2 days once recived into performing lab
Methodolgy
Quantitative Enzymatic Assay/Electrophoresis
CPT Code
83625; 83615
Last Updated
7-Feb-24 BHD