The following are some examples of how much it costs to check for mandatory spondylitis: 1. The patient needs to have an MRI of the sacroiliac joint for 525 RMB. 2. The patient needs to have human leukocyte antigen B27, which is commonly referred to as HLB-B27, for about 200 RMB. 3. The patient needs to check for inflammatory indicators, such as blood sedimentation, C-reactive protein, blood count, ferritin, etc. for about 100 RMB. To check ankylosing spondylitis, it will not cost more than 1000 yuan, and then combined with the clinical doctor’s examination, such as measuring the finger distance, the mobility of the cervical spine, the mobility of the lumbar spine, such as the heel-hip distance, jaw-handle distance, occipital wall distance, etc., it will cost just a few dozen dollars. Overall, it does not cost a lot of money to check for ankylosing spondylitis, about 1000 yuan will solve the problem.