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Cut-offs and Drug Detection Windows

The length of time that the presence of drugs of abuse in the body can be detected is an important factor in drug screening. The chart below outlines approximate duration times. When interpreting the duration for the presence of drugs of abuse in the body, you must take into consideration variables including the body's metabolism, the subject's physical condition, overall body fluid balance, state of hydration and frequency of usage.

The chart below shows the average duration times of how long drugs stay in the body and are not intended to apply to a specific individual.

Cutoffs & Drug Detection Windows
DRUG FAMILY
SAMHSA Cut-offs (ng/ml)
Detection Time
Prescription Trade Names
Screen
GC/MS
Avg Days
Possible Days
AMP Amphetamines
1,000
500
1-2
5
Dexedrine
0
0
0
0
BAR Barbiturates
300
200
1-3
14-21
Seconal, Fiornal, Nembutol, Luminol, Donnatol
0
0
0
0
BZD Benzodiazepine
300
200
1-9
21
Valium, Ativan, Librium, Xanax, Dalmane
0
0
0
0
BUP Buprenorphine
10
5
1-2
1-2-32+
Suboxone
0
0
0
0
COC Cocaine
300
150
2-3
0
00
0
0
0
0
THC Marijuana
50
15
2-3
30
0
0
0
0
0
MTD Methadone
300
200
1-2
6
Dolophine
0
0
0
0
MAMP Methamphetamines
1,000
500
3-5
0
0
0
0
0
0
OPI Opiates
2,000*
300
1-5
7
Morphine, Codeine, Dilaudid, Percodan
0
0
0
0
OXY Oxycodone
100
100
1-5
0
 
0
0
0
0
PCP Phencyclidine
25
25
1-3
8
0
0
0
0
0
PRO Propoxyphene
300
100
1-2
0
Darvon, Darvocet
0
0
0
0
TCA Tricyclic Antidepressants
1,000
300
1-4
9
Elavil, Sinequan, Tofranil, Pamelor
0
0
0

0

*also available at 300ng

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