20 апр. 2015 г. · The normal range of RF is from 0-20 IU/ml. RF above 20 IU/ml is not considered enough to diagnose RA, as there other reasons the RF level may be ...

Some doctors define normal RF levels as 0–20 units per milliliter (U/ml) of blood. On the other hand, one 2012 study designated the upper limit of regular ...

30 апр. 2023 г. · Normal Results · Value, normal less than 15 IU/mL · Titer, normal less than 1:80 (1 to 80).

28 июн. 2024 г. · Normal findings are negative (ie, < 60 U/mL by nephelometric testing). Values may be slightly higher in elderly patients.

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 ...

The normal range of rheumatoid factors in the blood is less than 14 IU/mL. Any values above 14 IU/mL suggest abnormal results, and the person might have ...

9 окт. 2023 г. · Rheumatoid factors are present in low titre in 5% of the normal population. ... Reference range/units. <30 IU/mL = negative. 30-50 IU/mL ...

Normal Results · Value, normal less than 15 IU/mL · Titer, normal less than 1:80 (1 to 80).

The normal level for an older adult may be slightly higher than 20 U/mL. How is this test done? The test is done with a blood sample. A needle is used to draw ...