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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: LD, Total, CSF

Test Code(s): CFLD / GM2750

CPT Code(s): 83615

Methodology: Lactate-Pyruvate

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: 1 hour.
Routine: 4 hours.


Specimen Requirements

Specimen: Cerebrospinal fluid (CSF)

Collection Container: Preferred: Numbered specimen tube from sterile disposable lumbar puncture tray or red top
Also Acceptable: Sterile screw cap container

Collection Volume: Preferred: 1 mL
Pediatrics: 0.3 mL

Sample Analyzed: Cerebrospinal fluid (CSF) aliquot

Volume Required: Preferred: 0.5 mL
Pediatrics: 0.3 mL

Specimen Processing: Centrifuge.  Transfer cell-free fluid to plastic vial.  Refrigerate.

Specimen Transport: Transport specimen to UWHC Core Laboratory (B4/220) immediately. Transport with coolant pack if coming from outreach location.

Unacceptable Criteria: Specimens greater than 2 hours old when received by the laboratory are not acceptable.

Stability: Ambient: 2 hours


Interpretation

Additional Information:

This test was performed using a modification of an FDA approved method.  The performance characteristics of this test were determined by the UWHC Clinical Laboratories and meet the standards for clinical testing.

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