Guest guest Posted January 2, 2005 Report Share Posted January 2, 2005 Welcome to the group, Faith! Unfortunately, there are very few tests in the realm of rheumatic disease that are diagnostic of a particular condition. Despite its name, even the rheumatoid factor (RF) test is not specific to RA. High titers like yours usually are RA, with emphasis on the word " usually. " There isn't a standard for measuring RF, so the results and the cutoffs for normal vary from lab to lab. The sed rate is often elevated in those with RA, but it doesn't have to be. Has your physician ever run a C-reactive protein (CRP) test? > > Does anyone know how a rheumatoid factor of 487 is classified? > I believe this is a different type of result than the 1:80, 1:64 etc that is usually used. ( I think it is a newer type of test for rheumatoid factor) I just know that when they talk about the ratio titers, they associate different diseases to different levels of the factor...I have not been able to find anything about this type of measurement except that <60 is negative. Any input you might have is appreciated > > Also why would a SED rate be normal when a person has obvious signs of inflammation in multiple joints? ( redness, swelling, severe pain) > > Faith > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 2, 2005 Report Share Posted January 2, 2005 No ..I only recently had the SED rate done, I was referred to Rheumy waiting for that appointment.I suspect he may order that test. I have not been back to my primarry care physician since the results of the RF. In those same set of tests, I was also postive for ANA. Originally it was thought that I had Psoriatic psoriasis due to the fact I also have psoriasis or psoriasis type rashes. But from what I understand a Positive RF or ANA is not usually found in Psoriatic Arthritis. Thanks for the information. Faith -------------- Original message -------------- Welcome to the group, Faith! Unfortunately, there are very few tests in the realm of rheumatic disease that are diagnostic of a particular condition. Despite its name, even the rheumatoid factor (RF) test is not specific to RA. High titers like yours usually are RA, with emphasis on the word " usually. " There isn't a standard for measuring RF, so the results and the cutoffs for normal vary from lab to lab. The sed rate is often elevated in those with RA, but it doesn't have to be. Has your physician ever run a C-reactive protein (CRP) test? > > Does anyone know how a rheumatoid factor of 487 is classified? > I believe this is a different type of result than the 1:80, 1:64 etc that is usually used. ( I think it is a newer type of test for rheumatoid factor) I just know that when they talk about the ratio titers, they associate different diseases to different levels of the factor...I have not been able to find anything about this type of measurement except that <60 is negative. Any input you might have is appreciated > > Also why would a SED rate be normal when a person has obvious signs of inflammation in multiple joints? ( redness, swelling, severe pain) > > Faith > > Quote Link to comment Share on other sites More sharing options...
Guest guest Posted January 2, 2005 Report Share Posted January 2, 2005 No ..I only recently had the SED rate done, I was referred to Rheumy waiting for that appointment.I suspect he may order that test. I have not been back to my primarry care physician since the results of the RF. In those same set of tests, I was also postive for ANA. Originally it was thought that I had Psoriatic psoriasis due to the fact I also have psoriasis or psoriasis type rashes. But from what I understand a Positive RF or ANA is not usually found in Psoriatic Arthritis. Thanks for the information. Faith -------------- Original message -------------- Welcome to the group, Faith! Unfortunately, there are very few tests in the realm of rheumatic disease that are diagnostic of a particular condition. Despite its name, even the rheumatoid factor (RF) test is not specific to RA. High titers like yours usually are RA, with emphasis on the word " usually. " There isn't a standard for measuring RF, so the results and the cutoffs for normal vary from lab to lab. The sed rate is often elevated in those with RA, but it doesn't have to be. Has your physician ever run a C-reactive protein (CRP) test? > > Does anyone know how a rheumatoid factor of 487 is classified? > I believe this is a different type of result than the 1:80, 1:64 etc that is usually used. ( I think it is a newer type of test for rheumatoid factor) I just know that when they talk about the ratio titers, they associate different diseases to different levels of the factor...I have not been able to find anything about this type of measurement except that <60 is negative. Any input you might have is appreciated > > Also why would a SED rate be normal when a person has obvious signs of inflammation in multiple joints? ( redness, swelling, severe pain) > > Faith > > Quote Link to comment Share on other sites More sharing options...
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