Rheumatoid Factor : ARUP Lab Tests

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Rheumatoid Factor : 0050465

Mnemonic: RA

Methodology:	Immunoturbidimetric
Performed:	Sun-Sat
Reported:	Within 24 hours
Specimen Required:	Patient Prep: Fasting specimen preferred. Collect: One 4 mL serum separator tube. Storage/Transport Temperature: 0.5 mL serum at 2-8°C. (Min: 0.5 mL) Submit specimen in an ARUP Standard Transport Tube. 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 (collection to initiation of testing): 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
Cross References:	RA

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