Pathology

Test & Collection Guide

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Xanthochromia

Alternate names:

CSF-Xanthochromia

Laboratory:

Biochemistry

Test Code:

XANTHC

Specimen types:

Cerebrospinal Fluid

Container types:

CSF

Collection Instructions:

Please note : to avoid sample deterioration, DO NOT send CSF specimens via the vacuum chute system.

THERE MUST BE A MINIMUM OF 0.6 mL OF CSF OR THE TEST CANNOT BE PERFORMED

Notes:

This test is specialised and will only be performed on CSF's when:

CT scan is negative

Four tubes must be collected and the container of the 4th tube must be wrapped in foil (please Label specimen before wrapping in foil)

A white top tube must be collected for simulataneous measurement of serum Bilirubin and serum Protein (or add on to existing bloods within 6 hours of CSF collection).

Frequency:

As required

Result Turnaround Time:

24 hours

Laboratory Use Only

Storage Instructions:

CSF xanthochromia checklist

Sample collected >12hrs from onset symptoms Preferable

4^th CSF sample Essential

Sample light protected immediately Essential

Sample transported manually to lab Essential

Serum sample for bilirubin & protein- essemtial

Slip with clinical notes and contact details Essential

Transport Instructions:

MH and AH send via taxi ASAP and notify BH laboraotry.

Laboratory Notes:

Please quickly check that the tube is labelled underneath the foil before passing to Scientist.

The specimen designated for spectrophotometry should be centrifuged at .2000 rpm for 5 min as soon as possible after receipt in the laboratory. The supernatant must be stored in the dark at 4⁰ C until analysis.