Description

Order an HLA-B27 test to help diagnose or support a suspicion of autoimmune diseases like ankylosing spondylitis, reactive arthritis, or juvenile rheumatoid arthritis, particularly when a patient presents with symptoms like back pain, joint stiffness, or inflammation, as a positive HLA-B27 result can increase the likelihood of these conditions, although it is not definitive on its own and should be considered alongside clinical presentation and other tests; it may also be used in the context of organ transplantation to assess tissue compatibility with a potential donor.

Fasting not required.