Bilirubin, CSF : ARUP Lab Tests

Testing Information

ARUP's Laboratory Test Directory

Bilirubin, CSF : 2005248

Mnemonic: BILCSF

Methodology:	Quantitative Spectrophotometry
Performed:	Sun-Sat
Reported:	Within 24 hours
Specimen Required:	Collect: CSF. Collect at least 12 hours after suspected hemorrhage. Use the last (ideally the fourth) specimen post lumbar puncture. AND serum separator tube. Specimen Preparation: CSF: Transport to local lab quickly and avoid pneumatic tube transport if possible. Protect from light during collection, storage and shipment. Centrifuge for 5 minutes ASAP or within 1 hour of collection. Transfer 2 mL CSF to an ARUP Amber Transport Tube. (Min: 1 mL) Do not freeze. Serum: Protect from light during collection, storage and shipment. Allow specimen to clot completely at room temperature. Separate from cells ASAP or within 2 hours of collection. Transfer 1 mL serum to an ARUP Amber Transport Tube. (Min: 0.5 mL) Storage/Transport Temperature: Refrigerated. Unacceptable Conditions: Specimens not protected from light. Frozen CSF. Stability (collection to initiation of testing): CSF: Ambient: 4 hours; Refrigerated: 1 week; Frozen: Unacceptable Serum: Ambient: 4 hours; Refrigerated: 1 week; Frozen: 6 months

Reference Interval:
Effective July 18, 2011

Test Number	Components	Reference Interval
	Net Absorbance, Bilirubin, CSF	Effective July 18, 2011 0.007 AU or less
	Net Absorbance, Oxyhemoglobin, CSF	Effective July 18, 2011 0.020 AU or less
0020032	Bilirubin, Total, Serum or Plasma	By report (reports may vary based on instrumentation)

Interpretive Data:

Refer to report.

Refer to Statement B under Testing Information at http://www.aruplab.com.

CPT Code(s):

84311 Net absorbance, Bilirubin, CSF; 84311 Net absorbance, Oxyhemoglobin, CSF; 82247 Total serum bilirubin

Cross References:

Xanthochromia (Bilirubin, CSF)