The number of rheumatoid arthritis females was more than males and most common after age of 40thand 50thyears.The number of patients which living in urban areas was higher than those in rural areas. Physical and chemical analysis of SF revealed more than 1 ml, yellow green color, cloudy, low viscosity, with large fat droplets, bloody fluid, low pH degree, low glucose level, high total protein and albumin levelsThe reference value of latent-MMP-1 activity level was in the range of (47.38- 227.72) ng/ml. Also, the activity level of enzyme was significantly different between the synovial fluid and serum of patients with RA [إقرأ المزيد]