Test Details

Mnemonic

CSFLA

Ordering Code

3504190

CPT-4 Code(s)

83605

Specimen Information

Collect

Cerebrospinal fluid (CSF)

Specimen Preparation

CSF should be placed on ice after collection. Centrifuge to remove cellular material and send 0.5 mL CSF supernatant in a screw capped plastic vial. Separate specimens must be submitted when multiple tests are ordered.

Minimum Volume

0.2 mL

Transport Temperature

Frozen

Rejection Criteria

Hemolyzed specimen

Stability

After separation from cellular material:
Room temperature: 2 hours
Refrigerated: 3 days
Frozen: 4 months
One freeze/thaw cycle is acceptable

Methodology

Enzymatic
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Reference Range

≤15 years: 0.5 - 2.8 mmol/L
16 years and older: 1.2 - 2.6 mmol/L
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Performing Laboratory

ARUP
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New York DOH Approval Status

Yes
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