ACR score for rheumatoid arthritis

ACR score is a scale to measure change in rheumatoid arthritis symptoms. It is named after the American College of Rheumatology.

Different degrees of improvement are referred to as ACR20, ACR50, ACR70. The ACR score is more often used in clinical trials than in doctor patient-relationships, as it allows a 'common standard' between researchers.

The Rheumatoid Arthritis Severity Scale (RASS) is based on sections of the ACR scoring system.

The 2010 ACR / EULAR Rheumatoid Arthritis Classification Criteria, which includes anti-CCP testing, has been developed to focus on early disease, and on features that are associated with persistent or erosive disease.