Video lesson
Why it’s ordered
To support a diagnosis of axial spondyloarthritis, reactive arthritis or uveitis.
Understanding results
Most people with ankylosing spondylitis carry HLA-B27, but so do about 6 to 8% of healthy Americans, most of whom never develop disease.
Good to know
It only needs to be tested once in a lifetime.
At a glance
Type
Blood tests
Reviewed by Farhan Tahir, MD, FACR
Questions about your own care?
Book an in-person or telehealth consultation with Dr. Tahir.
For education only. Don’t start, stop or change a medicine without talking to your care team.