This image illustrates the chemical structure of a purine molecule, highlighting the numbering of the carbon and nitrogen atoms. The purine structure consists of a pyrimidine ring (positions 1 to 6) ...

Uric acid is a waste product formed when the body breaks down substances called purines. While uric acid should exit through urine, it can sometimes build up in the blood and pass into the kidneys.

One of those waste products is uric acid. It’s formed when your body breaks down purines, which are found in some foods and drinks. Most of the uric acid leaves your body when you pee ...