Used as initial screening to indicate if a suspected drug is present. Cheap and easy and less accurate

Used after presumptive test confirms the presence of a drug. More expensive, accurate, and time consuming

No medical use. Most dangerous.

low abuse potential

very rare for medical use still very dangerous

very low abuse

over the counter

Mean that the body builds up a tolerance to the drug

Originally referred to a variety of substances that dulled the senses and relieved pain. Today, it means opioid

Depressants that induce sleep, relieve anxiety, and prevent seizure

Depressant used to help sleep, relieve anxiety, anesthesia, and prevent seizures

sleep producing

Pain relieving

expected in the general population

level that brings about the most beneficial effect (appropriate use of prescription)

1st level that cause harm: nausea, vomiting, or change in heart rate

level of drug that causes death

blood concentration at which 50% of people taking it die from that intake.

is the substance that is to be separated during chromatography

the substance which is fixed in place for the chromatography procedure

refers to the samples we are testing

refers to any substance capable of dissolving other substances