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ID:180 Rheumatoid Factor (RF)
Search Links: General Info : Protocols : LabTestsOnline

DescriptionRheumatoid factor is usually an IgM autoantibody which has IgG antibody binding activity.
IndicationInvestigation of possible rheumatoid arthritis.
Additional InfoThis assay is not isotype specific.
Concurrent Testsna
Dietary Requirementsna
InterpretationThe presence of RF is not essential for the diagnosis of RA but is present in approximately 70% of patients with RA and correlates with more severe disease. RF also occurs in other autoimmune diseases (e.g. Sjogren's) and in some (viral) infections. Rheu

DepartmentClinical Immunology
SampleSerum
TubeSerum Gel
Tube Picture
Collection ConditionsNo restrictions on collection conditions HOWEVER please note that this test is not appropriate for pleural fluid samples.
Min. Vol2 mL
Freq.Weekdays

Ref. Range (Male)
Ref. Range (Female)
Ref. Range (Paed)
Ref. Range Notes<20
Unitsiu/mL
IP Acute TAT- Contact Laboratory
IP Routine TAT7 days
GP Acute TAT- Contact Laboratory
GP Routine TAT7 days
Turnround CommentNA

Originally edited by : JHB. Review due on 14/09/2018 14:33:16. Published By BD on 14/09/2017 14:33:16.