Rheumatoid Factor (RF)
RF
TEST CODE
300312
CPT
86431
Expected
Turnaround Time
Turnaround Time
Within 1 Day
Patient Preparation
-
Lab Charge
$14.18
Specimen Requirements
Specimen
Serum
Volume
1.0 mL / 0.5 mL minimum
Container
SST (preferred) or Red Top Tube
Preparation
Draw blood in gel-barrier tube and centrifuge. If red top is used, remove the serum and place in a transport tube. Label the transport tube with patient identifiers and specimen type.
Stability
Refrigerated, 8 Days
Storage Instructions
Refrigerated
Test Details
Methodology
Rejection Criteria
Received after 8 days refrigerated.
Serum not separated from cells.
Hemolyzed sample.
Improper labeling.
Incorrect collection container.
Test Components
Test Code
Test Name
LOINC
300312
Rheumatoid Factor
11572-5
