"Amount" means how much of something. It could be referring to mass, weight, volume, or number.
Drug misuse is when someone takes to much of a drug on purpose/ abuses the drug. If someone abuses a drug to much and takes the same amount over and over again they will need to take more of the drug to feel that affect.
presence not the strength or amount in the blood
dosage
Bioavailability of a drug is the amount of the drug that is available for use by the body after it has been metabolised by the liver.
Addiction...retardo.
Drug tolerant
You can get a minor amount of time if its a small amount of the drug .
EC50 is what is most often used to measure the potency of a drug. It is the potency of the drug after a specific amount of time.
drug drug interactions
Drug possession is the crime of having one or more illegal drugs in one's possession, either for personal use, distribution, sale or otherwise. Illegal drugs fall into different categories and sentences vary depending on the amount, type of drug, circumstances, and jurisdiction.
uh yeah..... that's why they call it a DRUG TEST
Onset in pharmacology refers to the amount of time it takes for a drug to start producing its therapeutic effects after administration. This can vary depending on the drug's pharmacokinetics and route of administration. A fast onset means the drug acts quickly, while a slower onset implies a delayed response.