Can blood test alone determine diagnosis?
I recently got full blood test after speaking to my GP about my ongoing lower back pain.
I said I suspect AS and she ordered a few blood tests for me.
It was a range of autoimmune detectors, crp, inflammatory markers and HLA-b27.
The HLA-b27 came back negative and all the other tests came back normal.
She said that from these results she doesn't think I have AS.
I did go to a rheumatologist in 2024 and he got me to get an x-ray of my si joints (plus other blood tests) - he said at that point that it doesn't look like I have AS but to keep monitoring it as it can develop over time.
I have most symptoms that correlates to AS on paper, but so far all tests have not shown that to be the case.
Anyone else in similar situation before they got diagnosed later on?