Evaluative laboratory testing. Assessing tests that assess disease activity.
D019411:Clinical Laboratory Techniques / Q000379:methods / Q000592:standards*; D003430:Cross-Sectional Studies; D005069:Evaluation Studies as Topic; D006305:Health Status Indicators; D006801:Humans; D008137:Longitudinal Studies; D010003:Osteoarthritis / Q000175:diagnosis; D012595:Scleroderma, Systemic / Q000175:diagnosis