Dear Jenstubb,
Hey there, how are you doing today?
Just want to give a little run-down on RA Factor tests. We've a few people lately with question on it, about it, etc...
The "norms" vary by lab to lab too! I know one pathology lab's normal reference for RF is 0-20.
Yours is 10. So that is within normal limits.
The RA factor test is a tricky little booger! The blood of many persons with RA does contain a macroglobulin antibody RF....BUT people with other diseases can also have a positive RF and not have clinincal RA.
The test is a good & useful tool in diagnosing rheumatoid arthritis.
Ok, when a RF test shows "positive" (meaning HIGH, over or near at least 20 or above. but if you show a 28 or 32 or something it is more worth looking into if you also present symptoms.)...it can support a tentative diagnosis of early onset of RA.
If you have the RF antibody in your blood and have blood work again and are tested again...it's most likely it will be there! Why? As many rheummies have told me, "Once a person shows RF titers, they'll always show titers."
10 is low, but even people with low RF DO INDEED HAVE RA! They can test for your sed rate, ANA, CRP, joint xrays, range of motion, fatigue, & family history...to further evaluate. But every person is an individual & docs sometimes tend to FORGET THAT! Not every person presents in the same manner or is a perfect "textbook patient". (which really ticks me off!)
RF in bloodwork can show up also if a person has: lupus, TB, endocarditis, Lymes, syphilis, cancer, viral infections & sarcoidosis.
For you to become a little bit more aware of your body & RA, think about the folowing:
*morning stiffness lasting more than 6 weeks.
*pain on motion in the joints (typically on both sides of the body) or one set of joints. (your hips) Take notice of your knees, hands, elbows too.
*swelling (although not all people produce a lot of fluid in the joints)
*low grade fevers (like 98.9 to 99.9)
*unusual fatigue
Some folks have a RF that's always broderline, and sometimes it's completely normal for that person, and it never evolves into anything. But...clinical and objective symptoms are very important.
So keep a little diary of how the days are till you see the rheummy. Especially about pain! In the morning? How long does it last? Does it get better with rest? Worse at night? Worse with activity? Can you bend? etc....
When you mentioned "jaw clenching"...do you mean lock-jaw or teeth grinding or painful jaw joints?
I wish you the best.
If I can be of any help just let me know!
Take care,
Erin VIEW IMAGE