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Epic Test Code LAB96 Lactate Dehydrogenase (LD): Serum

Performing Location(s)

BMC,HRK,FOX,FCC

Synonyms

LDH

Specimen Type

Serum or Plasma

Preferred Container

Gold or Red top tube

Alternate Container

Green top

Blood Tube Draw Volume

Min 50% draw volume  

Minimum Volume to Submit for Testing

1mL Serum or Plasma

  • Multiple test can be performed from this volume. For question please contact the lab at 547-3975.  

Transportation Needs

Deliver specimen to laboratory within 1 hour of collection if unspun. If not possible see "storage Requirements". 

Storage Requirements

Sample tubes should be centrifuged within 2 hours of collection 

Gold tops DO NOT ALIQUOT

Aliquot Red tops

See Causes of Rejection for temperature requirements.

Causes for Rejection

Mislabeled or unlabeled specimen
Less than 50% draw for Vacutainer tubes
> 5 days Refigerated
> 24 hours Room Temperature
Heparinized Plasma Stable 3 days at room temp or Frozen at -70C for 3 months
Hemolysis > 50 mg/dL HgB
Lipemia > 1000 mg/dL Trig
Bilirubin > 40 mg/dL Bili


 EDTA, NaF or Oxalate

 

Limitations

Hemolysis elevates LD results. Hemoglobin of 500 mg/dL [0.31 mmol/L (monomer)] will increase the LDH activity by 20 U/L at an LDH activity of 300 U/L.

Capillary collected blood may differ from venous due to contamination from hemolysis or interstitial fluid.

Extended refrigeration can lead to loss of labile LDH isoenzymes 4 and 5.

Reference Values

Population Units Reference Range
< 1 week old U/L 292-658
1 week - 1 month old U/L 131-282
1 month - 12 years old U/L 101-237
General (> 12 years old) U/L 140-271

 

Days of Analysis

All

Available STAT

Yes

Methodology

Beckman AU/Dx Series

CPT Code

83615

Last Updated

27-NOV-24 MS