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Drug & Nicotine Testing Kits Cutoff Levels & Detection Times

A detection period for drug testing kits is the amount of time after consuming a drug that a particular testing method could still show a positive result. A cutoff level is the defined concentration of a substance in a specimen. If the level is at or above the drug test result is called positive and if the level is below the drug test result is called negative. A confirmation cutoff level is the level at which a drug is confirmed to have shown in the sample at or above the listed level and has given a positive result.

Urine drug testing cut-off levels are expressed in nanograms per milliliter (ng/mL) or as a weight of drug per unit volume of urine. Hair drug testing cut-off levels are expressed in picograms per milligram (pg/mg) or as a weight of drug per unit weight of hair.

Hair Drug Testing

Screen Cut-OffGC / MS Cut-OffL.O.D. Level
Amphetamines
Amphetamine, Methamphetamine & Ecstasy
300 - 500pg/mg *200- 500pg/mg *100 pg/mg
Cocaine
Cocaine & Benzoylecgonine
300 - 500pg/mg *Cocaine: 200 - 500pg/mg *
Benzoylecgonine:50 pg/mg
100 pg/mg
Phencyclidine
PCP
300pg/mg100 - 300pg/mg *100 pg/mg
Opiates
Codeine, Morphine & 6-MAM(Heroin metabolite)
200 - 500pg/mg *200 - 300 pg/mg *100 pg/mg
Marijuana
THC, Carboxy-THC
0.1 - 1 pg/mg *THC: 0.3 - 50 pg/mg *
Carboxy-THC: 1 pg/mg
0.1 pg/mg
Barbiturates500 pg/mg200 pg/mg

-

Benzodiazepines500 pg/mg200 pg/mg

-

Propoxyphene500 pg/mgPropoxyphene: 200 pg/mg
Norpropoxyphene: 200 pg/mg

-

Methadone500 pg/mgMethadone: 200 pg/mg
EDDP: 200 pg/mg

-

Oxycodone
Oxycotin, Percodan/Percocet
300 pg/mg300 pg/mg

-

Hydrocodone
Vicodin, Lortab/Lorcet
300 pg/mg300 pg/mg

-

Hydromorphone
Dilaudid
300 pg/mg300 pg/mg

-

Urine Drug Testing

Cut-Off LevelEIA Screen Cutoff LevelGC/MS Confirmation Cutoff LevelApproximate Detection Time in Urine
Amphetamine (AMP)1000 ng/mL1000 ng/mL500 ng/mL2-4 Days
Amphetamine (AMP300)300 ng/mL1000 ng/mL500 ng/mL2-4 Days
Methamphetamine (MET)1000 ng/mL1000 ng/mL500 ng/mL3-5 Days
Methamphetamine (MET500)500 ng/mL1000 ng/mL500 ng/mL3-5 Days
Cocaine (COC)300 ng/mL300 ng/mL150 ng/mL2-4 Days
Cocaine (COC150)150 ng/mL300 ng/mL150 ng/mL2-4 Days
THC (THC)50 ng/mL50 ng/mL15 ng/mL15-30 Days
Opiates (OPI)2000 ng/mL2000 ng/mL2000 ng/mL2-4 Days
Opiates (MOR)300 ng/mL2000 ng/mL2000 ng/mL2-4 Days
Phencyclidine (PCP)25 ng/mL25 ng/mL25 ng/mL7-14 Days
Barbiturates (BAR)300 ng/mL300 ng/mL150 ng/mL4-7 Days
Benzodiazepines (BZO)300 ng/mL300 ng/mL150 ng/mL3-7 Days
Methadone (MTD)300 ng/mL300 ng/mL150 ng/mL3-5 Days
Propxyphene (PPX)300 ng/mL300 ng/mL150 ng/mL1-2 Days
Ecstasy (MDMA)500 ng/mL

-

-

1-3 Days
Tricyclic Antidepressants (TCA)1000 ng/mL

-

-

7-10 Days
Hydrocodone300 ng/mL

-

300 ng/mL

2-4 Days
Hydromorphone300 ng/mL

-

300 ng/mL

2-4 Days
Oxycodone (OXY)100 ng/mL

-

100 ng/mL

2-4 Days
Oxymorphone100 ng/mL

-

100 ng/mL

2-4 Days

Saliva Drug Testing

Cut-Off LevelEIA Screen Cutoff LevelGC/MS Confirmation Cutoff LevelApproximate Detection Time in Saliva
Amphetamine (AMP)1000 ng/mL1000 ng/mL500 ng/mL1-3 Days
Methamphetamine (MET)1000 ng/mL1000 ng/mL500 ng/mL1-3 Days
Cocaine (COC)300 ng/mL300 ng/mL150 ng/mL1-3 Days
THC (THC)50 ng/mL50 ng/mL15 ng/mL6 -12 Hours
Opiates (OPI)2000 ng/mL2000 ng/mL2000 ng/mL1-3 Days
Phencyclidine (PCP)25 ng/mL25 ng/mL25 ng/mL1-3 Days

Nail Drug Testing

Screen Cut-OffGC/MS Cutoff
Marijuana1 pg/mgTHC: 50 pg/mg
Carboxy-THC: 1 pg/mg
Amphetamine500 pg/mg200 pg/mg
Methamphetamine500 pg/mg200 pg/mg
Cocaine500 pg/mgCocaine: 200 pg/mg
Benzoylecgonine: 50 pg/mg
Opiates (Codeine, Morphine)200 pg/mg200 pg/mg

Nicotine Testing

Detection time : 4 Hours - 4 Days

* The above charts give approximate detection periods for each substance by test type. The ranges depend on amount and frequency of use, metabolic rate, body mass, age, overall health, drug tolerance, and urine pH. Please call us for detailed information.

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