Rheumatoid Factor Test
Rheumatoid factor (RF) is a blood test that measures the amount of the RF
How the test is performed
Blood is drawn from a vein, usually from the inside of the elbow or the back of the hand. The site is cleaned with germ-killing medicine (antiseptic). The health care provider wraps an elastic band around the upper arm to apply pressure to the area and make the vein swell with blood.
Next, the health care provider gently inserts a needle into the vein. The blood...
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Rheumatoid factor
Source: ADAM Encyclopedia
Normal ValuesResults are usually reported in one of two ways:Less than 40-60 u/mLLess than 1:80 (1 to 80) titerA low number (normal result) usually... Read more »
Rheumatoid factor
Source: ADAM Encyclopedia
What the risks areVeins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample... Read more »
Blood Test Could Detect Rheumatoid Arthritis Early
Swedish researchers say a blood test could predict rheumatoid arthritis (RA) long before the person notices any symptoms of the condition. The... Read more »
Rheumatoid factor (RF)
Source: ADAM Encyclopedia
ReferencesGoodyear CS, Tighe H, McInnes IB. Rheumatoid factors and other autoantibodies in rheumatoid arthritis. In: Firestein GS, Budd RC, Harris... Read more »
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