Question

Explain the Rheumatoid Factor titration​

Answer 1

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In the titer method, a ratio of less than 1:80 is considered normal, or less than 60 units of RF per milliliter of blood. A positive test means that RF is present in your blood. A positive test can be found in 80 percent of people with rheumatoid arthritis.

The "normal" range (or negative test result) for rheumatoid factor is less than 14 IU/ml. Any result with values 14 IU/ml or above is considered abnormally high, elevated, or positive.

Answer 2

Explanation:

Rheumatoid factors are proteins produced by your immune system that can attack healthy tissue in your body. High levels of rheumatoid factor in the blood are most often associated with autoimmune diseases, such as rheumatoid arthritis and Sjogren's syndrome.

A titer of 1 to 20 (1:20) means that RF can be detected when 1 part of the blood sample is diluted by up to 20 parts of a salt solution (saline). A larger second number means there is more RF in the blood. So a titer of 1 to 80 shows more RF in the blood than a titer of 1 to 20.

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