Geisinger Medical Laboratories Test Catalog

Order Display Name: Geisinger Epic Procedure Code Or ID CPT Code:  

RHEUMATOID FACTOR

ORDERING INFORMATION:
Geisinger Epic Procedure Code: LAB3007         Geisinger Epic ID: 7385

SPECIMEN COLLECTION
Specimen type:
Serum or plasma
Preferred collection container:
Specimen required:
2 mL aliquot serum or plasma; minimum 0.2 mL
Patient preparation:
Fasting specimen preferred.

SPECIMEN PROCESSING
Specimen processing instructions:
Allow serum to clot. Centrifuge to separate serum or plasma within 2 hours of collection. 
Transport temperature:
Refrigerated (preferred). Room temperature or frozen specimen also acceptable.
Specimen stability:
Room temperature: 24 hours. Refrigerated: 8 days. Frozen: 3 months.
Rejection criteria:
Stability limits exceeded.

TEST DETAILS
Reference interval:
< 14 IU/mL
CPT code(s):
86431
Note: The billing party has sole responsibility for CPT coding.  Any questions regarding coding should be directed to the payer being billed.  The CPT codes provided by GML are based on AMA guidelines and are for informational purposes only.
Test includes:
Rheumatoid factor.
Methodology:
Immunoturbidity
Synonyms:
RF
Clinical significance:
Elevated RF is found in collagen vascular disease such as SLE, rheumatoid arthritis, scleroderma, Sjögren's syndrome, and in other conditions such as leprosy, tuberculosis, syphilis, malignancy, thyroid disease, and in a signfiicant percentage of otherwise normal elderly patients.
Doctoral Director(s:)
Hoi-Ying Elsie Yu, PhD, DABCC
Sheng-Ying (Margaret) Lo, PhD, DABCC    
Review Date: 12/14/2022

Performing Locations

Geisinger Medical Center

Performing laboratory: Automated Chemistry
Technical Lead: Megan Woodruff / Jared Shepherd
Frequency: Daily, Monday - Sunday
Performed STAT? Yes
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