ENDOCRINOLOGY 
It deals with the study of endocrine system and disease associated on it and also its specific secretion which are hormones.
Endocrinology is the study that concerned with the storage and physiologic function of human body’s hormone and with endocrine cells that secretes them.
DRUG TESTING 
Is used to detect the presence of illegal drugs that prohibited by the law. For example, cannabis, heroin and cocaine.
It analyze the biological specimen of human that includes hair, urine, blood, sweat or saliva that aims to detect if there is a presence or even absence of a drug.
TOXICOLOGY 
Is the study and detection of poisoning particularly to the human. It is also a study of the symptoms and treatment of the said poisoning.
It deals with the adverse effect of chemicals on living organism.
