ACR score for rheumatoid arthritis

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ACR score is a scale to measure change in rheumatoid arthritis symptoms.[1] It is named after the American College of Rheumatology.

Different degrees of improvement are referred to as ACR20, ACR50, ACR70.[clarification needed] 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.[2]

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. [3]