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Lactate/Pyruvate Panel, CSF

Important Note

Before Collection please call the lab for appropriate collection tube.  Failure to collect with PCA tube could result in test rejection.

Additional Codes

LAB5755

Performing Laboratory

St. Louis Children's Hospital

Methodology

Enzymatic

Specimen Requirements

Specimen Type: Cerebrospinal Fluid (CSF)

Container/Tube

Preferred: Perchloric acid (PCA) Vacutainer®

Acceptable: NA

Collection Volume: 1.0 mL

NOTE: minimum of 0.5 mL CSF may be used but MUST call lab to get an adjusted PCA tube for reduced volume.

Patient Preparation: None

Sample Rejection:

Specimens with incorrect volume of CSF to PCA ratio.

CSF specimens containing any red blood cells or hemolysis that are NOT mixed with PCA at collection site.

Mislabeled or unlabeled specimens.

Special Instructions:

1. Call lab at 314-996-4522 to have PCA tube sent for collection.

2. Collect exactly 1.0 mL of CSF and place in PCA tube.

3. Invert tube 8-10 times to mix PCA and CSF.

4. Forward to lab promptly (may remove specimen from ice to send thru tube system).

Day(s) Test Set Up

Day(s) Test Set Up: Monday-Sunday
Cut-off time: 13:00
Turnaround Time: Same day if received before cut-off time; next day if received after 1:00 p.m.
Lab Testing Section: Chemistry

Reference Values

Reference Range:

Lactate: 1.1-2.3 mmol/L

Pyruvate: 0.03-0.11 mmol/L

Critical Values:

Lactate:

Critical value (automatic callback): >8.0 mmol/L

Test Classification and CPT Coding

83605: Lactate
84210: Pyruvate

Stability

Analyte Stability:

  LACTATE PYRUVATE
Ambient: NA NA
Refrigerated 8 days (supernatant) 2 days (supernatant)
Frozen NA DO NOT freeze