Rheumatoid Factor, Quant

Test Code: TD_3505

CPT Code(s): 86431

$9

Test Details

Alternative Name(s)

RA
RF, Quant

Test Includes

RF, Quant

Methodology

Roche COBAS immunoturbidimetric

Rejection Criteria

Moderate or gross hemolysis

Reference Range(s)

<14 IU/mL

Specimen Requirements

Preferred Specimen

Serum Separator Tube

Minimum Volume

0.5 mL serum

Sample Stability

1 day room temperature
8 days refrigerated
3 months frozen

Transport Temperature

Refrigerated

Collection Instructions

Allow SST to clot in an upright position for
at least 30 minutes, then centrifuge sample within 2 hours
of collection. Refrigerate

Alternative Specimen

2 mL serum from a plain red top tube. Allow sample to clot in an upright position for at least 60 minutes, then centrifuge sample and transfer serum to a plastic transport tube within 2 hours of collection. Clearly label tube as serum from a plain red top tube. Refrigerate.