ARUP's Laboratory Test Directory

Rheumatoid Factor : 0050465

Mnemonic: RA

Methodology: Immunoturbidimetric
Performed: Sun-Sat
Reported: Within 24 hours
Specimen Required: Collect:  One 4 mL serum separator tube.

Transport:  0.5 mL serum at 2-8°C. (Min: 0.3 mL) Submit specimen in an ARUP Standard Transport Tube.

Pediatric Collection/Transport:  0.2 mL serum at 2-8°C.

Remarks:  Serum is the only acceptable specimen type for this assay without a disclaimer.  Allow serum to clot completely at room temperature before centrifuging.  

Unacceptable Conditions:  Plasma.  Hemolyzed specimens.

Stability:  After separation from cells: Ambient: 24 hours; Refrigerated: 1 week; Frozen: 2 weeks (should be thawed only once)
Reference Interval:
0-14 IU/mL
CPT Code(s): 86431
 
 

 

 

 
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