You won’t get booted out of the military because you walked past someone in the dorm smoking a joint. The military testing labs use thresholds to rule out accidental exposure and testing errors. The standards used by the military are:

DOD Urinalysis (Drug Test) Cutoff Levels)

 

 

Drug Screening Level (Nanograms per milliliter) Confirmation Level (Nanograms per milliliter)
THC (Marijuana) 50 NG/ML 15 NG/ML
Cocaine 150 NG/ML 100 NG/ML
Opiates:    
Morphine 2000 NG/ML 4000 NG/ML
Codeine 2000 NG/ML 2000 NG/ML
Heroin (6 MAM) 300 NG/ML 10 NG/NL
Amphetamines 500 NG/ML 500 NG/ML
Methamphetamine 500 NG/ML 500 NG/ML
MDA/MDMA (Ecstasy) 500 NG/ML 500 NG/ML
Barbiturates (Amobarbital, butalbital, Pentobarbital, Secobarbital) 200 NG/ML 200 NG/ML
PCP 25 NG/ML 25 NG/ML
LSD .5 NG/ML 0.2 NG/ML