Test Overview
Test Methodology

Immunofixation

Test Usage

Detection of cerebrospinal fluid (CSF) in other body fluids, such as nasal or ear fluid.

Reference Range *

Pathologist interpretation of results provided.

* Reference ranges may change over time. Please refer to the original patient report when evaluating results.

Test Details
Days Set Up
Varies; test performed once per week
Analytic Time

24 hours

Soft Order Code
B2TSF
MiChart Code
Beta 2 Transferrin, Body Fluid
Synonyms
  • CSF in other body fluids
  • B2TSF
  • BETA-2 TRANSFERRIN, FLUID
  • Otorrhea (ear fluid leak)
  • Rhinorrhea (nasal fluid leak)
Laboratory
Chemical Pathology
Section
Immunopathology
Specimen Requirements
Collection Instructions

Collect nasal or other body fluid specimen in clean tube or container. Refrigerate. Store at 2-8°C for up to one week.

Normal Volume
0.5 mL fluid
Minimum Volume
0.2 mL fluid
Additional Information

Test includes pathologist interpretation of results billed as a separate additional charge. This test is not available without interpretation.

Billing
CPT Code
86335
Fee Code
36567
Pro Fee CPT
86335-26
Pro Fee Code
86335
LOINC
43858-0
Resources