Rheumatoid Factor Screen with Reflex to Titer, Synovial Fluid

For Specimen Integrity during Extreme Weather see the “Lockbox Usage in Extreme Weather” document at the top of this page.

Test Code

CPT Codes
86430<br /> **This test is not available for New York patient testing**

If RF Screen is positive, RF Titer will be performed at an additional charge (CPT code(s): 86431)

Preferred Specimen
1 mL synovial fluid submitted in a sterile, screw-cap vial

Minimum Volume
0.3 mL

Transport Temperature
Refrigerated (cold packs)

Specimen Stability
Room temperature: Unacceptable
Refrigerated: 7 days
Frozen: 21 days

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Visible particulate matter • Lipemia

Latex Agglutination (LA)

Setup Schedule
Setup: Tues, Fri; Report available: 3 days

Reference Range
Rheumatoid Factor, LA Screen Negative
Rheumatoid Factor, LA Titer <1:5

Performing Laboratory
Quest Diagnostics Nichols Institute-San Juan Capistrano, CA
33608 Ortega Highway
San Juan Capistrano, CA 92675-2042

Last Updated: December 6, 2021

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.