What is the range for rheumatoid factor?

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 elevated.

What does a rheumatoid factor of 100 mean?

RF Test Results In a person with signs and symptoms of early arthritis and a positive RF test: The arthritis is likely to be persistent (it won’t go away) A high RF level (in the 100s or 1000s) can mean the arthritis is more severe. It is very likely that the person has RA.

What does a rheumatoid factor of 60 mean?

If your level is lower than 60 U/mL, your results are considered negative and you likely don’t have RA. Levels above that may mean that you have RA or another autoimmune disease. The normal level for an older adult may be slightly higher than 60 U/mL.

What are the five worst foods for rheumatoid arthritis?

6 Foods to Avoid When You Have Rheumatoid Arthritis

  • Red Meat. Many cuts of red meat contain high levels of saturated fat, which can exacerbate inflammation and also contribute to obesity.
  • Sugar and Refined Flour.
  • Fried Foods.
  • Gluten.
  • Alcohol.
  • Processed Foods.

Which food is bad for rheumatoid arthritis?

Foods You Should Avoid with Rheumatoid Arthritis

  • Grilled, broiled, or fried meats (and other fried foods).
  • Fatty foods full of omega-6 fatty acids.
  • Sugars and refined carbohydrates.
  • Gluten.
  • Preservatives and flavor enhancers.
  • Alcohol.

What is the normal rheumatoid factor ( RF )?

Range (IU/ml or International Units per Milliliter) Rheumatoid Factor (RF) Less than 14 IU/mL. A rheumatoid factor of less than 14 IU/mL is considered to be normal. In the Titer method, the normal ratio is less than 1:80 or 1 to 80.It is to be noted that the normal levels may vary slightly in different laboratories.

What does a positive rheumatoid factor test mean?

A positive rheumatoid factor test means that the level of rheumatoid factor in the patient’s blood is considered to be high. Rheumatoid factor was first described in connection to rheumatoid arthritis in 1940. For decades, a positive rheumatoid arthritis test was used to diagnose those with symptoms of rheumatoid arthritis.

What is the normal rheumatoid factor titer range?

Titer: Below 1:80 (1 to 80) titer Units: Below 40-60 units per milliliter (U/Ml) A titer is a measure of the dilution of blood after which the detection of RF is no longer possible. A titer of 1:20 (1 to 20) indicates that RF is detectable when 1 part of sample of blood is diluted to up to 20 parts of saline.

What happens if you have high levels of rheumatoid factor?

On the other hand, people who have high levels of rheumatoid factor may go on to develop autoimmune disorders like rheumatoid arthritis, while others with elevated rheumatoid factor may not develop an autoimmune disorder.