https://www.selleckchem.com/pr....oducts/Fasudil-HCl(H
Rheumatoid factor (RF) and anti-cyclic citrullinated peptide (CCP) antibody tests are often measured at the time of rheumatoid arthritis (RA) diagnosis but may not be repeated and therefore not available in electronic health record (EHR) data; lab test results are unavailable in most administrative claims databases. ICD10 coding allows discrimination between rheumatoid factor positive (M05) ("seropositive" and seronegative (M06) patients, but the validity of these codes has not been examined. Using the ACR's Rheumatology I