The CCP antibody test helps to diagnose RA and can be useful in identifying people with a more rapidly erosive form of the disease. RA is a chronic, systemic autoimmune disease that causes inflammation, pain, stiffness, and destructive changes in the hands, feet, and other joints throughout the body.
As you can see from the map above, most of the Illinois population is based in the North East of the state. Chicago, home to 2,695,598 people, remains the largest city in Illinois. It dwarfs the state's other cities â the next largest is Aurora, with 197,899 people.
Chicago Heights, Illinois - Basic Facts. The City of Chicago Heights had a population of 30,419 as of July 1, 2016. Chicago Heights ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Illinois. See peer rankings below.