Drug Test -

: Highly accurate but invasive; usually reserved for accidents or high-stakes clinical settings. Standard Drug Panels

: The most common for employment and legal reasons; can detect substances for days or weeks depending on the drug.

: Can include 8, 10, 12, or even 25 panels to screen for prescription drugs like benzodiazepines, barbiturates, and synthetic opioids like fentanyl. Drugs of Abuse Home Use Test - FDA DRUG TEST

A is a technical analysis of a biological specimen—most commonly urine, hair, blood, or oral fluid—to determine the presence or absence of specific illegal drugs or their metabolites. Common Drug Test Types

: Typically screens for Amphetamines, Cocaine, Marijuana (THC), Opiates, and Phencyclidine (PCP). : Highly accurate but invasive; usually reserved for

Tests are often categorized by the number of substances they screen for, known as "panels".

: Often used for recent-use screening; results are usually available within 24 hours. Drugs of Abuse Home Use Test - FDA

Different testing methods vary by their "detection window," or how far back they can identify drug use.