I have recently had some blood work done. My ANA was reported as Positive ANA 15 - homogeneous and speckled pattern. My question is what titer does the 15 correspond with? I have done some research, but I haven't found an explanation for this? Can anyone help?
Welcome to Medhelp. It appears there are two ways they talley up ANA levels. One way is by a titer that reads 1:40, 1:80, 1:160 (it doubles every time they wash the specimine and still see the antibody.) Anything over 1:40 is considered positive, but they really don't take notice until it gets up there around 1:320.
The other is called ANA IU/ML. Anything over 7.5 is considered positive. But I am not familar enough with these readings to give an assesment. I'm assuming this is the test your dr. did. I have gone up to the lab and asked to speak to someone about my test. I try to go when they are not swamped. (15 is double of 7.5, so it could be a significant level)
They also look at symptoms as well. Some healthy people can have a positive ANA. What kind of symptoms are you having?
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