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Test Code LAB205 Beta-2 Transferrin: Detection of Spinal Fluid in Other Body Fluid

Additional Codes

Mayo Test Code: BETA2

Reporting Name

Beta-2 Transferrin, BF

Useful For

Detection of spinal fluid in body fluids, such as ear or nasal fluid

Performing Laboratory

Mayo Medical Laboratories in Rochester

Specimen Type

Body Fluid

Specimen Required

Sources: Nasal, Otic, etc

Collection Container/Tube: Pipet, syringe, test tube, or microcollection device

Submission Container/Tube: Plastic vial

Specimen Volume: 0.5 mL

Collection Instructions:

1. If submitting a syringe, remove needle. Add cap to end of syringe.

2. If direct collection is not feasible, specimen may be collected using a cotton swab.

a. Place cotton swab in as small a container as possible (for example, a tightly-stoppered test tube).

b. Do NOT add any additional fluid to swab including, but not limited to, saline or microcollection fluids.

c. Tightly seal container.

Additional Information:

1. Although results may be obtainable on smaller specimens (perhaps as little as 0.05 mL, depending on the protein concentrations and percentage of spinal fluid in the specimen), reliable results are best obtained with an adequate specimen volume.

2. Indicate specimen type.

Specimen Minimum Volume

0.5 mL

Specimen Stability Information

Specimen Type Temperature Time
Body Fluid Frozen (preferred)

Reference Values

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

Day(s) and Time(s) Performed

Monday through Saturday; 1 p.m.

Test Classification

This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. This test has not been cleared or approved by the U.S. Food and Drug Administration.

CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
BETA2 Beta-2 Transferrin, BF 13876-8


Result ID Test Result Name Result LOINC Value
80351 Beta-2 Transferrin, BF 13876-8

Reject Due To










Method Name

Electrophoresis/Immunofixation-Peroxidase Antisera/Dimethylformamide Visualization