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

24 hours

MiChart Code
Beta 2 Transferrin, Body Fluid
Soft Order Code

Update Type: Test Down or Delayed

Test Updated: 02/27/2020


CSF in other body fluids
Otorrhea (ear fluid leak)
Rhinorrhea (nasal fluid leak)

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Test Overview

Test Methodology


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.

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

Billing Information

CPT Code
Pro Fee Code
Insurance Auth Info

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Our High Standard

Quality that sets us apart

As the reference laboratory division of Michigan Medicine's Department of Pathology, MLabs shares the institution's commitment to applying established quality principles to clinical laboratory testing. Like other large organizations in complex, consequential fields, we rely on an established approach to monitor quality throughout the testing process.