FAQ 2019-02-21T23:15:50-05:00
My Friends Were Smoking Weed 2018-11-15T21:38:25-05:00

We are often asked if someone will fail a test from second hand smoke and the answer is no.  While it is possible to have trace amounts of THC in your system, it would not be enough to produce a level high enough for a positive result.

Q: What if I fail my DOT drug screen?  

A: First, you will be removed from your duties immediately.  Second, you will meet with a substance abuse professional, SAP, that will determine the amount of education/training, follow-up testing, and a return to work test must be completed before you can work at that position.   Third, you will have a minimum of 6 follow-up tests over the next 12 months.  Your employer may or may not terminate your employment.  


Potential Reactants and Cross-reactants


COMPOUND (Generic Name)

COMPOUND (Trade Name)


Abacavir Ziagen Non-reactive
Acamprosate Campral Non-reactive
Acetaminophen (See also Paracetamol) Aceta, Acephen, Apacet, Dapacen, Feverall, Tylenol,  Non-reactive
  Excedrin (Combination), Panadol, Tempura  
Acetaminophen with Codeine (see also  Tylenol 3, Tylenol with codeine Positive for Opiates (OPI, MOR)
Paracetamol with codeine)    
Acetic Acid Ethanoic Acid Non-reactive
Acetophenetidin Phenacetin Non-reactive
Acetylsalicyclic acid Aspirin, Anadin, Anasin, Bufferin, Caprin, Disprin,  Non-reactive
  Ecotrin, Empirin, Excedrin (combination)  
Aciclovir Zovirax Non-reactive
Adinazolam Deracyn Non-reactive
Albuterol (salbutamol) Aerocrom, Aerolin, Airomir, Asmasal, Combivent,  Non-reactive
  Duovent, Ventide, Ventodisks, Ventolin, Volmax  
Allobarbital No known trade names Positive for Barbiturates (BAR)
Alphenol No known trade names Positive for Barbiturates (BAR)
Alprazolam Xanax Positive for Benzodiazepines (BZO)
Aluminum Chloride Hexahydrate Drichlor, Anhydrol Forte Non-reactive
Aluminum Hydroxide Alu-Cap, Alisone, Gastrocote, Kolanticon, Maalox,  Non-reactive
  Maalox TC, Mucogel, Pyrogastrone, Topal  
Alverine Citrate Spasmonal, Spasmonal Fibre Non-reactive
Amitriptyline Elavil, Lentizol, Tryptizol, Triptafen, Triptafen-M Positive for Tricyclic Antidepressants (TCA)
Amlodipine Caduet, Norvasc Non-reactive
Ammonia/Ipeacuanha Ipecac Non-reactive
Amobarbital Amytal, Tuinal Positive for Barbiturates (BAR)
Amoxicillin or Amoxycillin Amoxil, Amoram, Augmentin, Heliclear Non-reactive
Ampicillin Penbritin, Polycillin, Principen Non-reactive
Amylmetacresol Strepsils Non-reactive
Anhydrol forte   Non-reactive
Antabuse Disulfiram Non-reactive
Antazoline Sulphate Otrivine-Anistin Non-reactive
Antipyrine 4-Dimethylaminoantipyrine Non-reactive
Aprobarbital   Positive for Barbiturates (BAR)
Aspirin Bayer Aspirin, Excedrin, ASA, Angettes, Asasantin,  Non-reactive
Atenolol Beta-adlat, Co-tenidone, Kalten, Tenben, Tenif,  Non-reactive
  Tenoret 50, Tenorectic, Tenormin  
Atorvastatin Lipitor Non-reactive
Azlocillin Securopen Non-reactive
Baclofen Lioresal, Kemstro Non-reactive
Barbital   Positive for Barbiturates (BAR)
Beclometasone AeroBec, AeroBec Forte, Asmabec, Beclazone,  Non-reactive
  Becloforte, Becodisks, Beconase, Becotide, Fillair,   
  Nasobec, Qvar, Ventide, Zonivent  
Bendrofluazide Aprinox, Cogaretic, Indertic, Inderex, Neo-Naclax,  Non-reactive
  Neo-Naclax-K, Prestim, Tenben  
Benzalknonium Bradosol Non-reactive
Benzocaine Americaine, Merocaine Non-reactive
Benztropine Cogentin Non-reactive
Benzydamine Difflam Non-reactive
Benzylpenicillin Crystapen Non-reactive
Bromazepam Lexotan Positive for Benzodiazepines (BZO)
Bromopheniramine Dimetapp, Dimotapp, Dimotane Non-reactive
Budesonide Entocort, Pulmicort, Rhinocort Non-reactive
Buprenorphine Subutex, Suboxone, Temgesic Positive for Buprenorphine (BUP)
Buproprion Wellbutrin, Zyban Non-reactive
Butabarbital Butisol, Soneryl Positive for Barbiturates (BAR)
Butalbital Fioricet, Fiorinal Positive for Barbiturates (BAR)
Butethal   Positive for Barbiturates (BAR)
Canestan Canestan ear/skin/vaginitis/HC Non-reactive
Carbamate Pesticide Non-reactive
Carbamazepine Tegretol, Teril, Timonil Non-reactive
Carisoprodol Soma Non-reactive
Celecoxib Celebrex Non-reactive
Cephalexin Ceporex, Keflex Non-reactive
Cetirizine Zyrtec Non-reactive
Cetylpyridinium Cepacol mouth rinse Non-reactive
Chloral Hydrate Welldorm Non-reactive
Chlorazepate Tranxene Positive for Benzodiazepines (BZO)
Chlordiazepoxide Librium Positive for Benzodiazepines (BZO)
Chlorhexidine Gluconate Bactrigras, Cordsodyl, Chlorohex, CX Powder,  Non-reactive
  Dermol, Hibicet, Hibiscrub, Hibisol, Hibitane,   
  Instillagel, Naseptin, Nystaform, Serotulle, Steripod,   
  Tisept, Unisept, Uriflex, Uro-Trainer  
Chloroform   Non-reactive
Chlorpheniramine Maleate Galpseud, Haymine, Piriton Non-reactive
Chlorpromazine Largactil Non-reactive
Chlorprothixene Cloxan, Fluanxol, Taractan, Truxal Non-reactive
Cimetidine Dyspamet, Tagamet, Zita Non-reactive
Cinnarizine Stugeron Non-reactive
Ciprofloxacin Cipro Non-reactive
Citalopram Cipramil Non-reactive
Clobazam  Frisium Positive for Benzodiazepines (BZO)
Clofibrate Atromid-S Non-reactive
Clomethazole Chlormethiazole, Heminevrin Non-reactive
Clonazepam Clonopin, Klonopin, Rivotril Positive for Benzodiazepines (BZO)
Clotrimazole Lotrimin, Lotrisone, Mycelex Non-reactive
Clozapine Clozaril, Clopine, Zaponex Non-reactive
Co-Amoxiclav Augmentin, Augmentin Duo Non-reactive
Co-danthramar Dantron Non-reactive
Codeine Phosphate Codafen Continus, Codeine Linctus, Pediatric BP,  Positive for Opiates (OPI/MOR)
  Galcodine, Kapake, Migraleve, Solpadol, Tylex  
Co-Fluampicil Magnapen Non-reactive
Combivir Epivir Non-reactive
Co-Phenotrope (atropine/diphenoxylate) Lomotil, Trepergen Non-reactive
Co-Trimoxazole   Non-reactive
Cyclobenazprine Flexeril Positive for Tricyclic Antidepressants (TCA)
Cyclosporin Neoral Non-reactive
Cyprohetadine Periactin Positive for Tricyclic Antidepressants (TCA)
Cyproterone Androcur, Cyprostat, Nioproxil, Progynova, Siterone Non-reactive
d/l-Octopamine No known trade names Non-reactive
Dantrolene   Non-reactive
Delorazepam Briantum Positive for Benzodiazepines (BZO)
Dequalinium Dequadin Non-reactive
Desmopressin DDAVP, Minirin, Stimate Non-reactive
Dexamethasone Decadron, Dexa-Rhinaspray Duo, Maxidex, Maxidrol,  Non-reactive
  Minims, Otomize, Sofradex  
Dexamphetamine Sulphate Adderall, Adderall XR, Dexedrine Positive for Amphetamine (AMP)
Dextropropoxyphene Darvon, Darvocet, Co-proximal Positive for Propoxyphene (PPX)
Diazepam Diazemuls, Stesolid, Valclair, Valium Positive for Benzodiazepines (BZO)
Diclofenac Sodium Dicloflex, Diclomax, Motifene, Volraman, Volsaid,  Non-reactive
Dicyclomine Kolanticon, Merbentyl Non-reactive
Didanosine Videx Non-reactive
Dihydrocodeine DHC Continus, Paramol, Remedeine, Remedeine  Positive for Opiates (OPI/MOR)
Diltiazem Cardizem, Dilacor, Tiazac Non-reactive
Dimethicone Asilone, Fancorsil Non-reactive
Dipenoxylate with Atropine Lomotil Non-reactive
Diphenhydramine Benadryl, Medinex, Nytol, Panadol Night Non-reactive
d-Methamphetamine HCL Desoxyn, Methedrine, Methamprex Positive for Methamphetamine (mAMP)
Docusate Sodium   Non-reactive
Donepezil Aricept Non-reactive
Dopamine Intropin Non-reactive
Dothiepin Prothiaden Positive for Tricyclic Antidepressants (TCA)
Doxepin Sinequan, Xepin Positive for Tricyclic Antidepressants (TCA)
Doxycycline Vibramycin, Vibramycin-D Non-reactive
Doxylamine Nyquil Positive for Methadone (MTD)
Droperidol Dridol, Droleptan, Inapsine Non-reactive
Duloxetine Cymbalta Non-reactive
Efavirenz Sustiva Positive for Cannabinoids (THC) [Urinary metabolite(s) only; parent compound is nonreactive]
Enoxaparin Clexane, Lovenox Non-reactive
Erythromycin Arpimycin, Benzymycin, Erycane, Erymax, Erythrocin,  Non-reactive
  Erythroped, Ilosone, Isotrexin, Lactobinate,   
  Stiemycin, Tiloryth, Zineryl  
Estazolam ProSom Positive for Benzodiazepines (BZO)
Ethambutol Myambutol Non-reactive
Ethylmorphine   Positive for Opiates (OPI/MOR)
Fenofibrate Tricor Non-reactive
Ferrous Fumarate Iron Non-reactive
Flucloxacillin Co-fluampicil, Floxapen, Magnapen Non-reactive
Flumazenil Romazicon Non-reactive
Flunitrazepam Rohypnol Positive for Benzodiazepines (BZO)
Fluoxetine Prozac, Sarafem Non-reactive
Flupentixol Decanoate Depixol, Fluanxol Non-reactive
Fluphenazine Prolixin Non-reactive
Flurazepam Dalmane Non-reactive
Folic Acid   Non-reactive
Fusidic Acid (Sodium Fusidate) Fucithalmic, Fucibet, Fucidin Non-reactive
Gamma-Hydroxybutyrate GHB Non-reactive
Gemfibrozil Gemcor, Lopid Non-reactive
Gentamicin Sulphate Cidomycin, Genticin, Gentisone Non-reactive
Gliclazide Diamicron, Dianorm Non-reactive
Halazepam Alapryl, Paxipam, Pacinone Positive for Benzodiazepines (BZO)
Haloperidol Haldol Non-reactive
Hepatitis B Vaccine   Non-reactive
Hydrochlorothiazide Hyzaar, Losartan Non-reactive
Hydrocodone Lorcet, Loratab, Vicodin Positive for Opiates (OPI/MOR) and/or 
    Oxycodone (OXY)
Hydrocortisone Actinac, Alphaderm, Alphosyl-HC, Anugesic-HC,  Non-reactive
  Anusol-HC, Calmurid-HC, Canesten-HC, Colioam,   
  Daktacort, Dioderm, Econacort, Efortelan, Efcortesel,   
  Eurax-HC, Gregoderm, Hydrocortistab,   
  Hydrocortone, Mildison lipocream, Neo-cortef, Nystaform, Perinal, Proctofoam, Quinocort, Terracortil, Timodine, Uniroid-HC, Vioform-HC, Xyloproct
Hydrocortisone-17-butyrate Locoid, Locoid C Non-reactive
Hydromorphone Dilaudid, Hydrostat Positive for Opiates (OPI/MOR) and/or 
    Oxycodone (OXY)
Hydroxocobalamin Vitamin B-12 Non-reactive
Hydroxychloroquine Plaquenil Non-reactive
Hydroxyzine Atarax, Ucerax Non-reactive
Hyoscine butylbromide Busocopan, Scopoderm Non-reactive
Ibuprofen Brufen, Codafen, Fenbid, Ibugel, Ibuspray, Motrin,  Non-reactive
Indomethacin Flexin continus, Indocid, Indomod Non-reactive
Interferon Alfa Intron A, Roferon-A, Viraferon, Wellferon Non-reactive
Isoniazide INH Non-reactive
Isosorbide Dinitrate Angitak, Cedocard, Isocard, Isoket, Isordil,  Non-reactive
  Sorbichew, Sorbitrate, Sorbid SA  
Ketoprofen Orudis, Oruvail, Powergel Non-reactive
Koalin and Morphine Mixture Diocalm, Entersan, Opazimes Positive for Opiates (OPI/MOR)
Lactulose Duphalec, Lactugal Non-reactive
Lamotrigine Lamitcal Positive for Phencyclidine (PCP)
Lansoprazole Heliclear, Zoton Non-reactive
Lisinopril Carace, Zestril, Zestoretic Non-reactive
l-Methamphetamine HCL Vick’s Inhaler Positive for Methamphetamine (mAMP)
Lofepramine Gamanil, Lomont Positive for Tricyclic Antidepressants (TCA)
Lofexidine Britoflex Non-reactive
Loperamide Imodium, Loperagen, Norimide Non-reactive
Loratadine Claritin Non-reactive
Lorazepam Ativan Positive for Benzodiazepines (BZO)
Lormetazepam Noctamide Positive for Benzodiazepines (BZO)
Magnesium Alginate Gaviscon Non-reactive
Mannitol Gaviscon Non-reactive
Medazepam Anxitol, Lerisum, Medacepan, Nobritol, Nobrium Positive for Benzodiazepines (BZO)
Mefenamic Acid Ponstan, Ponstel Non-reactive
Meperidine Demerol, Pethidine Non-reactive
Methadone Hydrochloride Dolophine, Methadose, Physetone Positive for Methadone (MTD)
Methylenedioxyamphetamine (MDA) Eve (slang), Love Drug (slang) Positive for Amphetamine (AMP) and Ecstasy 
Methylenedioxymethamphetamine (MDMA) Adam (slang), Ecstasy (slang), XTC (slang) Positive for Methamphetamine (mAMP) and 
    Ecstasy (MDMA)
Methylenedioxymethamphetamine (MDMA) E (slang) Positive for Methamphetamine (mAMP) and 
    Ecstasy (MDMA)
Metoclopramide Reglan Non-reactive
Metronidazole Anabact, Elyzol, Flagyl, Metrogel, Metrolyl, Metrotop,  Non-reactive
  Neuratop, Noritate, Rozex, Zidoval, Zymoet  
Morphine  Astramorph, Cyclimorph, Duramorph, Morcap,  Positive for Opiates (MOR, OPI)
  Morphine Sulfate, MS Contin, Oramorph, Roxanol,   
Nadolol Corgard, Corgaretic, Corgartic Non-reactive
Naloxone Narcan Non-reactive
Naltrexone Antaxone, Nalorex, Trexan Non-reactive
Naproxen Aleve, Condrotec, Napratec, Naprosen, Naprosyn,  Non-reactive
  Nycopren, Synflex  
Nicotine Nicoderm, Nicorette, Nicotinell, Nicotrol, Niquitin Non-reactive
Nifedipine Adalat, Nifecard, Nifar, Nif-ten, Procardia Non-reactive
Nitrazepam Mogadon, Somnite Positive for Benzodiazepines (BZO)
Norethindrone BiNovum, Brevinor, Climagest, Climesse, Elleste  Non-reactive
  Duet, Estracombi, Evorel, Kliofem, Kliovance,   
  Loestrin, Micronor, Norlutin, Noriday, Norimin,   
  Norinyl, Noristat, Nuvelle, Ovysmen, TriNovum,   
  Trisquens, Utovian  
Noscapine Narcotine Non-reactive
Olanzapine Zyprexa Non-reactive
Orphenadrine Disipil, Norflex, Norgesic Non-reactive
Oxazepam Ox-pam, Serax Positive for Benzodiazepines (BZO)
Oxymetazoline Afrin, Neo-synephrine Non-reactive
Oxytetracycline Terra-Cortil, Terramycin, Trimovate Non-reactive
Paracetamol (Acetaminophen) Fortagesic, Paradote Non-reactive
Paracetamol (Acetaminophen) /Codeine  Co-codamol, Codafen, Co-dydramol, Kapake,  Positive for Opiates (MOR, OPI)
Preparations Remedine, Solpadol, Tylenol 3, Tylex  
Paroxetine Paxil, Seroxat Non-reactive
Penicillin Combicillin, Mefoxin Non-reactive
Pentobarbital Nembutal Positive for Barbiturates (BAR)
Pericyazine Amplan, Aolept, Apamin, Iryakin, Nemactil, Neulactil,  Non-reactive
  Propetyl, Psycholept  
Phenobarbital Donnatal Positive for Barbiturates (BAR)
Phenobarbitone (see also Phenobarbital) Luminal Positive for Barbiturates (BAR)
Phenytoin Dilantin, Epanutin, Epitard Possible Positive for Barbiturates (BAR)  Urinary metabolite(s) only; parent compound is non-reactive
Pholcodine Galenphol, Strong BP, Pavacol-D, Thebacon Positive for Opiates (MOR, OPI)
Piperacillin Pipracil, Tazobactam Non-reactive
Prazepam Centrax, Demetrin Positive for Benzodiazepines (BZO)
Prednisolone Delta-cortef, Econopred, Inflamase, Pediapred,  Non-reactive
Procaine Novocain Positive for Opiates (OPI, MOP)
Progesterol   Non-reactive
Promethazine Allerfen, Anergan, Antinaus, Aprobit, Avomine,  Positive for Tricyclic Antidepressants (TCA)
  Baymethzine, Diprozin, Fenergan, Methazine,   
Propranolol Beta-Progane, Inderal, Inderetic, Inderex Non-reactive
Pseudeophedrine Afrinol, Expulin, Sudafed, Tylenol Cold (combination) Non-reactive
Ranitidine Pylorid, Zantac Positive for Methamphetamine (M-AMP) Urinary metabolite(s) only; parent compound is non-reactive
Risperidone Risperdal Non-Reactive
Salbutamol(albuterol) Aerocrom, Aerolin, Airomir, Asmasal, Combivent,  Non-reactive
  Duovent, Ventide, Ventodisks, Venotlin, Volmax  
Secobarbital Seconal Positive for Barbiturates (BAR)
Sennosides Senokot Non-reactive
Sertraline Zoloft Potential Positive for Benzodiazepines (BZO)
Sodium Valproate Depakene, Depakote, Epilim Non-reactive
Temazepam Restoril Positive for Benzodiazepines (BZO)
Testosterone Andropatch, Restandol, Sustanon, Virormone, slang name “anabolic steroids” Non-reactive
Thioridazine  Mellaril Non-reactive
Thyroxine Sodium Eltroxin Non-reactive
Tramadol Tramake, Ultram, Zamadol, Zydol Non-reactive
Trazodone Desyrel, Molipaxin, Trialodine Non-reactive
Triazolam Halcion Positive for Benzodiazepines (BZO)
Valporic Acid Depakene Non-reactive
Venlafaxine Effexor, Effexor XL Potential Positive for Phencyclidine (PCP)
Warfarin Sodium Coumadin, Marevan Non-reactive