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Rheumatoid Factor Screen with Reflex to Titer, Synovial Fluid
Test Code15384
Includes
If Rheumatoid Factor, LA Screen is positive, then Rheumatoid Factor, LA 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
Refrigerated: 7 days
Frozen: 21 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Gross hemolysis • Visible particulate matter • Lipemia
Methodology
Latex Agglutination (LA)
Setup Schedule
Setup: Tues, Fri; Report available: 3-6 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 |
