The evaluation of ankylosing spondylitis begins with a history and physical exam.

Physical findings in those with ankylosing spondylitis include:

• Decreased range of motion of the spine
• Decreased chest expansion
• Kyphosis
• Anterior uveitis

Tests are necessary to confirm the diagnosis of ankylosing spondylitis.

Tests for ankylosing spondylitis may include:

• Spine x-rays:
• Normal spine
• Ankylosing spondylitis effects in neck and lower back
• Normal low back
• Chest x-ray:
• Normal
• Kyphosis
• Rheumatoid factor
• Serum HLA B27 level
• Erythrocyte sedimentation rate
• Complete blood count
• CT of the spine
• MRI of the spine
• Echocardiogram