Immunofixation, Urine

Test Code

213

CPT Codes
86335

Includes

CPT code 81050 may be added at an additional charge for volume measurement

Preferred Specimen

25 mL random urine or 24-hour urine collected in a plastic, leak-proof container, no preservative

Minimum Volume

15 mL

Other Acceptable Specimens

Random urine, or 24-hour urine collected in a UA urinalysis transport tube (yellow-top, blue fill line)

Transport Temperature

Room temperature

Specimen Stability

Room temperature: 5 days
Refrigerated: 7 days
Frozen: 30 days

Methodology
Immunofixation

Setup Schedule

Set up: Mon-Sat; Report available: 2-5 days

Clinical Significance

Immunofixation of urine is useful in evaluation of monoclonal free light chains and other monoclonal gammopathies seen in light chain disease, multiple myeloma, Waldenstrom's macroglobulinemia, amyloidosis, and other lymphoproliferative disorders. Increased polyclonal free light chains in urine may be seen in glomerular leak syndromes and in infection or inflammation.

Performing Laboratory
Quest Diagnostics Nichols Institute
14225 Newbrook Drive
Chantilly, VA 20153

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.