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Tests

Diagnosis is normally made on signs and symptoms, but doctors may also use laboratory tests and imaging:

  • CRP – may rise with inflammation
  • ESR - may rise with inflammation
  • FBC – to look for excess white cells which might show infection
  • HLA-B27 – In Australia most ankylosing spondylitis patients have this gene
  • X-rays or other imaging such as MRI – typical changes seen on X-ray are the ‘bamboo sign’ which is due to new bone growth.

Last Review Date: December 26, 2016