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Important Links

Testing Algorithms

Specimen Collection

Critical Values/Reference Ranges

Clinical Pathology

Anatomical Pathology

Mayo Clinic Laboratories

Catalog ID RF Rheumatoid Factor

CPOE Test Name

Rheumatoid Factor; RF Quant

Epic EAP Test Code

LAB1195

Synonyms

RF

Specimen Type

Serum

Specimen Requirements

5 mL gold top SST tube 2 mL blood

Causes for Rejection

Wrong tube; improper labeling; not refrigerated during storage

CPT / HCPCS Code

86431

Performing Lab

Core Laboratory BI 2023 721-2120

Reference Values

Non-reactive (< 14.0 IU/mL)

Storage and Transport

Refrigerate.