Chemical pathology is the branch of pathology concerned with detecting, measuring and interpreting non-infectious, sub-microscopic molecules. These non-infectious molecules are usually measured in bodily fluids like blood, urine and cerebrospinal fluid but chemical pathology is also responsible for measuring these substances in solids like stool, hair and tissue biopsies. As medical doctors, the pathologists in pathology laboratories provide a consultative service to our clinicians. This service aids in the interpretation of results and provides guidance on selecting the appropriate tests to confirm a diagnosis, prognosticate, monitor and manage patients. Branches include biochemistry, endocrinology, inherited metabolic disease, serology, toxicology and molecular pathology.