Inpatient and Outpatient Orderable

Rheumatoid Factor

Synonyms

  • ARTHRITIS
  • LAB206
  • RF
  • RHEUMATOID FACTOR

Cerner Name

Rheumatoid Factor

Clinical Info

Aids in the workup of suspected rheumatoid arthritis or undifferentiated inflammatory arthritides. Consider ordering this test in conjunction with Cyclic Citrullinated Peptide (CCP) to increase specificity and sensitivity.

Specimen Sources

Blood, Arterial Blood, Capillary Blood, Central Line Blood, Venous

Specimen Types

Blood

Container

Gold Top Tube

Collection Instructions

Submit only 1 of the following specimens:
Preferred:  Serum
Container/Tube:  Gold-top tube(s)
Specimen:  1 mL of serum
Transport Temperature:  Refrigerate
Collection Instructions:
Note:  1. Indicate serum on request form.
2.  Label specimen appropriately (serum).
Alternate: Plasma
Container/Tube:  Mint Green-top (lithium heparin) tube(s) or lavender-top (K3 EDTA) tube(s)
Specimen:  1 mL of lithium heparin or EDTA plasma
Transport Temperature:  Refrigerate
Collection Instructions:
Note:  1. Indicate plasma on request form.
2.  Label specimen appropriately (plasma).
 

Specimen Volume

Transport Instructions

Refrigerate

Specimen Stability

24 hours Room temperature
3 days Refrigerated
4 weeks Frozen
 
 

Methodology

Immunoturbidimetric

Days Performed

Monday through Sunday

Performing Laboratory

Northwell Health Laboratories

CPT

86431

PDM

5700061

Only Orderable at Locations:

Orderable Everywhere

Results
Component Name Base Name Common Name External Name
RHEUMATOID FACTOR QUANT, SERUM OR PLASMA RF RHEUMATOID FACTOR Rheumatoid Factor

Result Interpretation

≤13  IU/mL

Forms
LAB206 build edit