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HLA-B27 antigen


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HLA-B27 antigen

Alternative Names:

Human leukocyte antigen B27
Normal Values:

HLA-B27 is found in 5 - 7% of Caucasian people without autoimmune disease.


What abnormal results mean:

A positive test indicates a greater-than-average risk for developing:

  • Ankylosing spondylitis
  • Reiter's syndrome
  • Sacroiliitis (inflammation of the sacroiliac joint)

In the presence of suggestive clinical findings, a positive HLA-B27 test may confirm the diagnosis.
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