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HelpTest Code RF Rheumatoid Factor (RF)
Specimen and Container/Tube
Plasma
Rejection Criteria
Whole blood/unspun samples greater than 6 hours will be
rejected.
Turnaround Time
N/A
Specimen Type
Plasma
Preferred Volume
0.5 mL
Offsite Collection Instructions
1. Collect sample following standard collection methods
2. Within 2 hours of collection the sample must be spun and
aliquoted
3. Transport refrigerated (2 – 8C).
UCMC Collection Instructions
1. Collect sample following standard collection methods
2. Within 2 hours of collection the sample must be received in
Laboratory Service Center
3. Transport room temperature (15 – 25C).
STAT Turnaround Time
N/A
Test Usage
Measurements may be used as an aid in the diagnosis of
rheumatoid arthritis.
Critical Results
N/A
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.
Additional Information
N/A
Fee Code
30286431
Synonyms
N/A
Container/Tube
Li-Heparin Mint Green Top
Specimen Minimum Volume
0.2 mL
Day(s) Performed
24 hours, 7 days a week including holidays.
STAT DAY(S) AND TIME(S) PERFORMED
N/A
CPT
86431
Method Name
Immunoturbidimetric Assay
Reference Values
< 14 IU/mL
Test Includes
N/A
Reject Due To
Whole blood/unspun samples greater than 6 hours will be
rejected.
Included in Additional codes
N/A
Coverage Information
N/A
Stability: Room Temp
24 hours
Stability: Refrigerated
3 days
Stability: Frozen
4 weeks
Pediatric Volume
0.2 mL
Clinical Indications
Measurements may be used as an aid in the diagnosis of
rheumatoid arthritis.
Transport Instructions
1. Collect sample following standard collection methods
2. Within 2 hours of collection the sample must be spun and
aliquoted
3. Transport?�refrigerated?�?�(2 �??
8C).
Test Components
N/A
Specimen Stability
24 hours
Methodology
Immunoturbidimetric Assay
Synonyms/Key Search Words
N/A