Test Directory

Rheumatoid Factor

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Updated Test Information:

Test Description
Rheumatoid Factor
Synonym(s)
RF
Test ID
RF
Specimen Type
Serum
Alternate Specimen Type
Red, Li or Na-heparin, EDTA (Na2 or K2)
Specimen Requirements
SST
Stability
1 day at 20-25°C
8 days at 4-8°C
3 months at -20°C
Methodology
Immunoturbidimetric assay
Estimated TAT
0-2 days
Testing Schedule
Monday-Saturday
CPT Code(s)
86431
Minimum Sample Volume
1 mL
Pediatric Min. Volume (if applicable)
500 uL
Reference Range
<14 IU/mL
Performing Lab
Incyte Diagnostics
LOINC Code(s)
11572-5