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Beta-2 Transferrin

ORDER CODE: B2TRFN

ORDERING

SPECIMEN

PROCESSING

RESULTS

Test Code

SHC TEST CODE	LPCH TEST CODE
LAB11214R	LAB205

Synonyms

Beta-2 Transferrin; Cerebrospinal fluid leakage; Tau protein; CSF specific transferrin

Useful For

Indication of CSF leakage

Clinical Utility

ß2 transferrin is the desialylated form of transferrin that is present in large proportion in CSF and perilymph. The presence of ß2 transferrin is nasal or ear secretions is indicative of CSF leakage. Prompt diagnosis and localization facilitates appropriate decisions and decreases the risk of meningitis.

CPT Code

86335

LOINC Code

13876-8

Collection Instructions

Pipette, syringe or fluid in stoppered plain red top tube, or microcollection device.

If submitting a syringe, remove needle. Add cap to end of syringe.
Although results may be obtainable on specimens with less volume, reliable results are best obtained with an adequate specimen volume.

Inpatient: Deliver STAT to the laboratory at refrigerated temperature (2-8°C).

Outpatient: Freeze immediately and transport frozen.

Preferred Specimen(s)

Body fluid (Nasal, Oral or Ear drainage/fluid)

Container Type

Sterile container

Volume

REQUESTED VOLUME	MINIMUM VOLUME(PEDIATRIC)
1ml	0.5ml

Specimen Stability

	TEMPERATURE
SPECIMEN TYPE	ROOM TEMP	REFRIGERATED	FROZEN
Body fluid (Nasal, Oral or Ear drainage/fluid)	24 hours	72 hours	1 month

Causes for Rejection

Samples collected with additives such as microbiology media (eg, Stuart or Amies liquid medium) or TransFix/EDTA (used for analyses in flow cytometry) yield uninterpretable results

Department

Special Chemistry

Standard Run Time(s)

Daily

Turnaround Time

ROUTINE	STAT
2-3 days	1-2 days

Methodology

Electrophoresis