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Doctor insights on: Why Does A Positive Rf Referred Not Positive For Ra

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I'm 23 male my ra factor is 100 positive my ccp is 16 negative , sed rate 12 negative, and crp .13 negative can high blood fats cause + ra factor?

I'm 23 male my ra factor is 100 positive my ccp is 16 negative , sed rate 12 negative, and crp .13 negative can high blood fats cause + ra factor?

See below: All laboratory results need to be interpreted in the clinical context and the doctor who ordered the tests is usually in the best position to do that. Having said that, rheumatoid factor is not a specific marker for rheumatoid arthritis. It can be positive in many situations, including recovery from infection. High blood fat per se is not a cause of +RA factor. ...Read more

Dr. Tracy Lovell
869 doctors shared insights

Rheumatoid Arthritis (Definition)

A chronic inflammatory disorder that affects joints and may also affect ...Read more


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My blood test for rfigm was 176 the normal range is 0-25. Would this indicate a positive RA result?

My blood test for rfigm was 176  the normal range is 0-25. Would this indicate a positive RA result?

Yes: False positives sometimes occur, but those are usually not this high. The blood test doesn't equal a diagnosis of rheumatoid arthritis all by itself, but if you have painful, stiff, swollen joints, that is the most likely diagnosis. See a rheumatologist - the sooner the better. ...Read more

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Would 176 RA IgM factor be considered a low positive for rheumatoid factor. What would be considered a positive level. My ccp level is normal.

Would 176 RA IgM factor be considered a low positive for rheumatoid factor. What would be considered a positive level. My ccp level is normal.

It is positive: The level is not as important as what is your clinical examination and other findings. The positive rheumatoid factor by itself does not mean you have arthritis. There are other things that you rheumatologist will look forward to help clarify whether the positive rheumatoid factor is due to rheumatoid arthritis or something else. ...Read more

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I had a positive ANA test and positive smith antibodies. Will they find ra?

I had a positive ANA test and positive smith antibodies. Will they find ra?

Lupus: A high-titer ANA and a positive anti-sm (smith) usually means systemic lupus rather than rheumatoid arthritis. This is much more manageable today than in the past. No lab means much in isolation, and your physician ordered these labs because he/she suspected lupus. If the diagnosis is established, you'll probably want to join a community group for people with sle. Good luck. ...Read more

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How quick can a blood work test for lupus or RA go from constantly being negative to finally showing up as a positive?

How quick can a blood work test for lupus or RA go from constantly being negative to finally showing up as a positive?

Check the Laboratory: Call the laboratory and make sure that their quality controls were within their established standard deviations on the batch of tests that your specimen was run and also find out any possibility of false positives for that particular method that they are using to do your test. ...Read more

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Does ANA 1:320 make diagnosis of RA more definitive? My RF was negative but I have multiple symptoms over 6 months. ANA positive 1:320

Does ANA 1:320 make diagnosis of RA more definitive? My RF was negative but I have multiple symptoms over 6 months. ANA positive 1:320

No: ANA actually isn't something we expect to be positive in rheumatoid arthritis. Your physician is thinking about lupus as a possible explanation, I'll bet. I'm sorry you're having this illness and difficulty in getting diagnosed, but this is common. Usually the nature of a systemic immune disease such as lupus or RA becomes clear over time unless it remits on its own. ...Read more

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Diagnosed with RA ten years ago RF negative , lupus malar and photosentive discoid rash over whole body, malar tested positive for Cutuneous lupus?

Diagnosed with RA ten years ago RF negative , lupus malar and photosentive discoid rash over whole body, malar tested positive for Cutuneous lupus?

The question is?: So what is your question? There are only two possibilities. One is that you have 2 diseases, RA and lupus. The other is you never had RA, it was always just lupus. Ask your doctor or rheumatologist about it. ...Read more

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Intense joint pain in wrist, hands, shoulders. Blood tests, ESR at 28, CRP at 14 and rf factor at 44. Being referred to rheumy. Likely to have ra?

Intense joint pain in wrist, hands, shoulders. Blood tests, ESR at 28, CRP at 14 and rf factor at 44. Being referred to rheumy. Likely to have ra?

Yes.: You are the right age and have the right symptoms and lab work. Rheumatology evaluation is still imperative to delineate what type of inflammatory arthropathy you have and dictate/recommend treatment. ...Read more