Rheumatoid Factor


Abbrev Code:RF   
Order Code:LAB206Order Name:Rheumatoid Factor
Synonyms:RA Screen
Methodology:Endocrine: Immunoturbidimetry
Grand Itasca: Nephelometry
CPT Codes: 86431 x1
Turnaround Time:Performed Mon-Fri; results are reported the within 1 day.


Collection Instructions

Specimen:Blood
Optimal Volume:1 mL
Minimum\Peds Volume:0.6 mL
Container:Red or gold (gel), St Johns/St Joseph/Woodwinds - Red (no gel)
Alternate Containers: Red (no gel)
Causes for Rejection:Grossly hemolyzed and highly lipemic samples. Samples not separated from cells within 2 hours of collection.


Processing and Shipping

Specimen Processing:Within 2 hours of collection, centrifuge and aliquot 0.5 mL, 0.2 mL minimum. Store in refrigerator.
Shipping Instructions:Ship at refrigerated temperature.
Test Performed at or Referral Lab Endocrine  (UMMC-East Bank, Grand Itasca, St. Joseph's)


Interpretive

Reference Range:Endocrine: 0-20 IU/mL
Grand Itasca: 0-14 IU/mL
St. Joseph: 0-30 IU/mL
Use:Indicator in the diagnosis and treatment of Rheumatoid Arthritis.


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