Rheumatoid factor. Rheumatoid factor is an antibody that is measurable in the blood. It is commonly used as a blood test for the diagnosis of rheumatoid arthritis. Rheumatoid factor is present in about 80% of adults (but a much lower proportion of children) with rheumatoid arthritis. It is also present in patients with other connective tissue diseases (such as systemic lupus erythematosus) and in some with infectious diseases (such as infectious hepatitis).
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Abbreviation for releasing factors; rheumatoid factors, under factor; replicative form; reticular formation.
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radial fiber; radiofrequency; rapid filling; readiness field; reading factor; receptive field; regurgitant fraction; Reitland-Franklin [unit]; relative flow; relative fluorescence; release factor; renal failure; replacement fluid; replication factor; replicative form; repopulation factor [radiotherapy]; resistance factor; resonant frequency; respiratory failure; respiratory frequency; reticular formation; retroperitoneal fibromatosis; rheumatic fever; rheumatoid factor; riboflavin; risk factor; root canal filling; rosette formation

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RF abbr rheumatic fever

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in paper or thin-layer chromatography, the distance moved by a solute spot from the origin expressed as a fraction of the distance moved by the solvent front.

Medical dictionary. 2011.

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