Advanced Diagnostic Laboratories

Collect

Plain red top or SST tube.

Specimen Preparation

Onsite [NJH]: Transport to lab within 1 hour.
Offsite: Separate serum from cells within 2 hours by centrifuge and aliquot into a labeled polypropylene or similar plastic tube.
Preferred volume: 1 mL serum

Pediatric Collection

Minimum volume: 0.50 mL serum

Storage Transport Temp

Offsite: Send frozen serum Priority Overnight via FedEx and in a well insulated container on dry ice.

Stability

Stability after cell separation:      
24 hours at RT (15-25°C )                   
8 days refrigerated 4-8°C                             
3 months frozen at  ≤ -20°C          

Performed

Mon-Fri

Methodology

Turbidimetric

Reported

4 hours

Department

Core Lab

Synonyms

Turbidimetric, Rheumatoid Factor,  RF

Related Tests

Rheumatology/Arthritis, ANA pattern and titer (ANA), C-reactive protein (CRPLA), Anti-cyclic citrullinated peptide antibodies (CCP), Lyme disease Ab (MT), Erythrocyte sedimentation rate (ESR), Uric acid (URICX), CD20, pan B cells {Rituxan monitor} (CD20M), Anti-ds-DNA antobody (DNAC), Sjogrens antibody, anti SSA, anti SSB (SSAB/SSBB), Anti-Sci 70 antibodies (SCL70), Anti-neutrophil cytoplasmic Ab (CYNT), Myeloperoxidase Ab (MPOAB), Proteinase 3 Ab (PR3AB)

Reference Interval

Rheumatoid Factor	Human
	Male	Female
	IU/mL
All Ages	<14	<14

CPT Code

86431