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Test Code RF Rheumatoid Factor (RF)

Specimen Type

Plasma

Container/Tube

Li-Heparin  Mint Green Top

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).

Turnaround Time

4 hours

Test Includes

N/A

Preferred Volume

0.5 mL

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

Specimen Minimum Volume

0.2 mL

DAY(S) AND TIME(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

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