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Test Code RF Rheumatoid Factor

Specimen Type

Blood

Container

Mint green top with gel separator

Preferred Volume

4 mL

Availability

Monday – Friday 7:00 a.m. – 3:00 p.m.

Turnaround Time

24 – 72 hrs

STAT Availability

Not Available

Test Usage

Measurements may be used as an aid in the diagnosis of rheumatoid arthritis.

Test Methodology

Immunoturbidimetry

CPT Code

86431

Test Includes

quantitative in vitro determination of rheumatoid factors in plasma

Reference Range

< 14 IU/mL

Critical Results

None

Test Limitations

Rheumatoid factors are also found in other inflammatory rheumatic diseases and in various non-rheumatic diseases. They are also found in clinically healthy persons over 60 years of age.

Minimum Volume

2 mL

Fee Code

43061