Austin Pathology

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Cerebrospinal Fluid - Biochemistry

Alternate Names
CSF
Ordering Information

Please state indivdual tests required.

If "CSF Biochemistry" is requested, only glucose and total protein will be ordered.

Laboratory
Biochemistry
Specimen
CSF
See collection instructions
Container
Sterile CSF tube
Additional Collection Instructions

Where there are multiple tubes from a lumbar puncture:

Collect sequentially into 3 separate CSF tubes labelled 1, 2, 3. 

Tube 3 is for Microbiology and 1, 2 for Biochemistry, Cytology, etc. 

If tap is traumatic (blood-stained), 1 and 3 go to Microbiology for cell counts.


If a Xanthochromic Index is required, an additional 1 mL into a 4th CSF tube must be collected.  This tube must be protected from the light by wrapping in foil. 

The specimen must be sent to the laboratory as soon as possible. In neonates and infants a minimum of 300µL is required for Xanthochromia Index.

Minimum Adult Volume
None
Minimum Paediatric Volume
None
Frequency
Daily