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UW Health SMPH
American Family Children's Hospital

UW Hospital and Clinics Lab Test Directory

Test Name: Lactate, CSF


CPT Code(s): 83605

Methodology: Electrode

Days Performed: Daily, 24 hours.

Turnaround Time: Stat: Up to 30 minutes. All requests processed stat.

Specimen Requirements

Specimen: Cerebrospinal fluid (CSF)

Collection Container: Preferred: Radiometer PICOŽ syringe
Also Acceptable: Green top, Numbered specimen tube from sterile disposable lumbar puncture tray, Red top, Sterile screw cap container

Collection Volume: Preferred: 1.5 mL
Pediatrics: 0.5 mL

Volume Required: Preferred: 1.5 mL
Pediatrics: 0.5 mL

Specimen Transport: Transport specimen to UWHC Core Laboratory (B4/220) within 30 minutes of collection.

Unacceptable Criteria: Clotted specimens or specimens past stability time are not acceptable.

Stability: Ambient: 30 minutes
Refrigerated: 1 hour on ice slurry
Frozen: Not acceptable


0 days and up:  0.0-2.0 mmol/L

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.

lactic acid

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