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Test Code CSF LA CSF, Lactic Acid

Aliases

Lactic Acid CSF

Patient Preparation

No special patient preparation required

Special Collection Instructions

Transport to lab as soon as possible

Collection Method

Lumbar puncture or CSF shunt

Minimum Volume

  • Adults: 0.5 ml
  • Pediatric: 0.4 ml

Container

Sterile CSF Tube

Preferred Specimen

Sterile CSF Tube

Acceptable Specimens

  • Sterile CSF Tube
  • Sterile Urine Cup

Reference or Target Ranges

0.9-2.7 mmol/L

Reportable Units

mmol/L

Critical Value

None

Reasons for Rejection

 


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Hemolysis Threshold 250 mg/dL
Icterus Threshold 2 mg/dL
Lipemia Threshold 1000 mg/dL
Other QNS, contaminated, improperly Labeled, improper specimen type

Specimen Stability

 


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Ambient 8 hours, off cells
Refrigerated (4°C to 8°C) 14 days
Frozen(-40°C to 0°C) Not listed

Performance Information

 


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Days and Time Performed 24/7
Expected Turn Around Time Stat: 1 hour
Routine: 4 hours
Stat Availabilty Yes
Performing Bench UH Chemistry 
Methodology/Method Description Siemens Atellica – Colorimetric assay

Additional Information/Important Notes

If specimen is bloody, supernatant should be removed from red cells ASAP.

CPT Codes

83605