Toxicology

Screen (Immunoassay)	Cutoff (ng/mL)
Ethanol	500
Amphetamine	1000
Barbiturates	200
Benzodiazepines	200
Buprenorphine	10
Cannabinoid	50
Carisoprodol	100
Cocaine	300
Fentanyl	2
Methadone	300
Opiates	300
Oxycodone	100
Phencyclidine	25
Tramadol	200

Specimen Validity	Reference Range
Creatinine	> 20 mg/dL
Oxidants	< 200 μg/mL
pH	4.5 – 9
Specific Gravity	1.003 – 1.025

Benzodiazepine Panel (LC-MS/MS)	Cutoff (ng/mL)
Alprazolam	50
a-Hydroxyalprazolam	60
7-Aminoclonazepam	50
Diazepam	50
Nordiazepam	50
Oxazepam	60
Temazepam	50
Triazolam	50
Lorazepam	50

Opioids Panel (LC-MS/MS)	Cutoff (ng/mL)
Codeine	50
Morphine	50
Hydrocodone	50
Hydromorphone	20
Norhydrocodone	50
Dihydrocodeine	50
Oxycodone	50
Oxymorphone	50
Noroxymorphone	20

Amphetamine/Stimulants /ADHD Panel (LC-MS/MS)	Cutoff (ng/mL)
Amphetamine	50
Methamphetamine	50
Methylphenidate	50

Barbiturates Panel (LC-MS/MS)	Cutoff (ng/mL)
Butalbital	200
Phenobarbital	200
Secobarbital	200

Tricyclic Antidepressants	Cutoff (ng/mL)
Amitriptyline	50
Nortriptyline	50
Imipramine	50

Carboxy-THC (Marijuana metabolite)	Cut Off (ng/mL)
Carboxy-THC	30

Illicit Drugs Panel (LC-MS/MS)	Cutoff (ng/mL)
6-MAM	20
Benzoylecgonine	50
MDA	50
MDMA	50
MDPV	50
Mephedrone	50
PCP	25

Ethanol Panel (LC-MS/MS)	Cutoff (ng/mL)
Ethyl Glucuronide	300
Ethyl Sulfate	300

Nicotine Panel (LC/MSMS)	Cut Off (ng/mL)
Nicotine	50
Cotinine	50

Carisoprodol/Meprobamate	Cut Off (ng/mL)
Carisoprodol	50
Meprobamate	50

Neuropathics	Cut Off (ng/mL)
Gabapentin	500
Pregabalin	500

Zolpidem and Metabolite	Cut Off (ng/mL)
Zolpidem	50
Zolpidem-Phenyl-Carboxylic Acid	50

Selective Serotonin Reuptake Inhibitiors	Cut Off (ng/mL)
Citalopram	50
Fluoxetine	50
Paroxetine	50
Sertraline	50

Synthetic Opioids	Cut Off (ng/mL)
Buprenorphine	20
Norbuprenorphine	60
Fentanyl	10
Norfentanyl	20
Methadone	50
EDDP	50
Tramadol	50
o-Desmethyl-Tramadol	50
Meperidine	50
Naloxone	50
Naltrexone	50
Tapentadol	50