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* LACTATE DEHYDROGENASE, CEREBROSPINAL FLUID (CSF)

Mnemonic

CSF LDH

Synonym

LDH - LD - L-Lactate: NAD+ oxidoreductase

Specimen Collection Requirements

Collect

CSF, one sterile container

Handling

Centrifuge and separate to remove cellular material. It is better to not refrigerate or freeze the specimen, but to hold at room temperature (15-25°C), with analysis done ASAP.

Preferred Volume

1.00 mL

Minimum Volume

0.25 mL

Transport

INPATIENTS: Room temperature (15-25°C), run specimen immediately; OUTPATIENTS: Refrigerated (2-8°C)

Rejection Criteria

Hemolyzed, frozen or specimens collected in EDTA, potassium oxalate or sodium fluoride as anticoagulants

Stability

AFTER SEPARATION FROM CELLULAR MATERIAL: Ambient (18-26°C): 7 days; Refrigerated (18-26°C): 48 hours; Frozen (≤-20°C): Unacceptable

Testing Information

Performed

7 days/week

Reported

24 hours

Method

Enzymatic

Reference Values

Reference Values

≤ 30 U/L (about 10% of the serum level)

CPT Codes

83615

Last Updated: Thursday, January 5, 2017 03:41:21 AM


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