Clinical chemistry is like a doctor's science lab. When you go to the doctor and they need to check your blood or urine, they send it to the clinical chemistry lab.
In this lab, scientists take tiny amounts of your blood or urine and use special machines to measure different substances in it. They look at things like how much sugar is in your blood, how much cholesterol you have, and if your kidneys and liver are working well.
The scientists use the information they find to make sure you're healthy or to help figure out what's wrong if you're sick. Think of it like a puzzle - the information from the lab helps the doctor put all the pieces together and understand what's happening in your body.