The Chemistry Department of PCL offers tests that deals mainly with metabolic and endocrine ailments (e.g. cholesterol, glucose, thyroid tests). Test menus are tailored to the pediatric and adolescent populations and include traditional chemistry testing, therapeutic drug monitoring, organ panels and urine toxicology screening. At PCL Chemistry Department, samples are checked for various chemical components. When humans are in a state of good health, the levels of various body chemicals fall within highly predictable ranges. In disease, the levels of these chemicals change, thus signaling the disease process.