RHEUMATOID FACTOR, QUANTITATIVE

Test Code

RAQT

CPT Codes
86431

Preferred Specimen

1 Gold tube (gel separator)

Minimum Volume

0.5 mL

Other Acceptable Specimens

or 1 Lavender tube (EDTA)
or 1 Green tube (Lithium Heparin)

Instructions

Centrifuge for complete separation of plasma/serum and red cells. See Specimen Container for appropriate sample type. Separate and refrigerate until tested.

Specimen Stability

2-8°C up to 8 days; 15-30°C up to 24 hours; Frozen up to 3 months

Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)

Lipemic specimens

Methodology

Immunoturbidimetric

Setup Schedule

M, T, W, Th, F, Sa, Sun

Reference Range

<14 IU/mL

Clinical Significance

Detection and semiquantitative determination of rheumatoid factors in human serum.

Performed By
Alverno Laboratories

Performing Laboratory
Alverno Central Lab
NCHB1 (Chemistry, Beckman AU)

Last Updated: April 25, 2023

The CPT Codes provided in this document are based on AMA guidelines and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payor being billed. Any Profile/panel component may be ordered separately. Reflex tests are performed at an additional charge.