Ayoung adult male client presents to the orthopedic clinic complaining of "stiffening of the spine." the health care provider orders some diagnostic lab work. which lab result leads the health care worker to diagnose ankylosing spondylitis?

The healthcare worker diagnosed ankylosing spondylitis thru the result of blood tests done to the young adult male client.  HLA-B27 test must have noted the presence of  HLA-B27 gene. Other blood tests such as the ESR level or the CRP. must have also shown marks of inflammation in the body, the symptoms of ankylosing spondylitis.

this is a good question! i'll do some research and come back when i have the answer!