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Test Code RF Rheumatoid Factor, Serum

Additional Codes

Compendium Code (Iatric): L700.7901

Performing Laboratory

St. Lukes Hospital Laboratory

Methodology

Latex-enhanced immunoturbidimetric assay

Specimen Requirements

Separated specimens may be stored for up to 7 days at 2 - 8°C.

Draw blood in a serum gel tube(s). Spin down and send 1 mL of serum refrigerated.

 

Unspun specimens must be transported at ambient temperature and arrive to the laboratory within one hour of draw.

Reference Values

<15 IU/mL

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

CPT: 86431

LOINC: 11572-5