UCSF Navigation Bar

UCSF Departments of Pathology & Laboratory Medicine Home Page

Lab Manual for UCSF Clinical Laboratories

Lab Manual for SFGH

Internal Resources

Click here for more information about laboratory operations and procedures

If you have additional questions regarding this test, please call: 415-353-1667

Search Our Test Menu

Rheumatoid Factor, serum

Item Value
Approval req'd? No
Available Stat? No
Test code RF
Test group RF
Performed by Immunology
In House Availability Monday-Friday (day shift)
Method Rate nephelometry
Container type Gold top
Amount to Collect 1 mL blood
Sample type Serum
Preferred volume 0.5 mL serum
Min. Volume 0.3 mL serum
UCSF Rejection Criteria Lipemic sample.
Processing notes Refrigerate.
Units IU/mL
Normal range < 40 IU/mL
Synonyms RF
Turn around times 1-3 days
CPT coding 86431
LOINC code 15205-8
Last Updated 1/30/2013 11:43:28 AM
Entry Number 826
UCSF home page UCSF home page About UCSF Search UCSF UCSF Medical Center