Mainly in ASO (anti-streptohemolysin O), RF (rheumatoid factor) and CRP(C-reactive protein). The combined detection of these indexes can improve the accuracy of early diagnosis of rheumatoid diseases and reduce the misdiagnosis rate. The clinical significance of the test results must be comprehensively analyzed and judged by clinical professional doctors combined with clinical history, symptoms, signs and other auxiliary examination data. Please look for the trademark "Matang" when you see a doctor, and beware of being deceived.