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Also known as: HLA-B27 Antigen; B27
Formal name: Human Leukocyte Antigen B27

At a Glance

Why Get Tested?

To determine whether you have human leukocyte antigen B27 (HLA-B27) on the surface of your cells; to help assess the likelihood that you have an autoimmune disorder associated with the presence of HLA-B27

When to Get Tested?

When you have symptoms of arthritis-like chronic joint pain, stiffness, and inflammation in certain areas of your body, such as your lower back, hips, neck, and chest, or have painful inflammation of the eyes called uveitis, especially if you are male and the symptoms began in your early 30s

Sample Required?

A blood sample drawn from a vein in your arm

Test Preparation Needed?