Update Type: Test Discontinued
Test Updated: 05/10/2023
Test Overview
Test Methodology

Electrophoresis/Immunofixation

Test Usage

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

Reference Range *

Negative, no beta-2 transferrin (spinal fluid) detected.

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

Test Details
Days Set Up
Monday - Friday
Analytic Time

1 - 3 days

Soft Order Code
BETA2
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
Sendout
Reference Laboratory
Mayo BETA2
Section
Special Testing
Specimen Requirements
Collection Instructions

Collect nasal or other body fluid specimen in clean tube or container. Freeze (preferred) or refrigerate. Indicate specimen source. Include whether the source is from the right or left side of the body, if applicable. If direct collection is not feasible, specimen may be collected using a plain cotton swab or gauze. If gauze is used to collect specimen, circle area on the gauze where specimen was collected and place cotton swab or gauze in as small a container as possible (eg, plain test tube or collection container); do not collect specimen with a culture swab; do not add any liquid to the swab or gauze. Specimens collected from above the shoulders risk salivary contamination, which can degrade the beta-2 transferrin protein. These specimens should be frozen immediately following collection and kept frozen until testing is performed.

Normal Volume
0.5 mL fluid
Additional Information

Test sent to Mayo Clinic Laboratories.

Billing
CPT Code
86335
Fee Code
AA727
LOINC
13876-8