The HLA B27 haplotype is strongly associated with ankylosing spondylitis; most patients with this disease are HLA B27-positive (although only a small fraction of all people with this haplotype actually develop the disease). This haplotype is also associated with secondary arthritis, Reiters syndrome and acute anterior uveitis, although with these conditions the correlation is not so close.
Sample must be processed within 24 Hrs of collection. Do not refrigerate sample. EDTA for Flow cytometry or PCR.