False Positive Drug Test Facts

A False Positive Drug Test Should Worry Anyone Undergoing A Drug Test.  A false positive drug test can happen with the urine, hair, saliva or blood test, but it is far more likely with the urine drug test.  With the increased use of onsite, workplace, random and home drug testing kits the chance for a false positive drug test is now a much greater possibility than ever before. 

This Is Serious.  The negative consequences of false positive drug test can include loss of employment, jail time, exclusion from competitive sports, loss of privileges in a probation setting or even inappropriate medical care.

This False Positive Drug Test Is A Dirty Little Secret.  There has been many a person who failed a drug test with no clue as to why and with little or no recourse to prove their innocence.  If you fail due to a false positive result you must prove yourself innocent.  The testers do not need to do anything.  Some testers are very helpful and some are not.

False Positive Causes Are Everywhere. This is often caused by hundreds of products that are wrongly identified as illegal drugs or other drugs of concern.  Common prescriptions, over the counter medications and even foods can cause you to see a false test positive.

How Common Is A False Positive Drug Test?

According to Web MD “Drug tests generally produce false-positive results in 5% to 10% of cases and “Poppy Seeds and Cold Medications Can Trigger False Alarms”.

This Could Happen To You.

• About 5% to 10% That Fail Are Not Guilty.
• You Are Judged Guilty – They Don’t Care.
• You Must Then Prove Your Innocence.

Can Poppy Seeds Cause A False Positive?

The Drug Testing Labs Say It Can Never Happen, but the Myth Busters proved without a doubt it can.  Eating some poppy seed cake or a poppy seed bagel can produce a poppy seed false positive result for opiates according to the “Myth Busters Poppy Seed Drug Test“.  “Can you imagine explaining you do not use heroin, you just ate a bagel”.

Why Are The Testers In Such Denial About The False Positive Drug Test?  Because acceptance would cause all drug test results to be called into question and drug testing is big business.  Admitting the level of this problem would cost a bunch of people a lot of money.

What Can Cause A False Positive Drug Test?

The reasons for a false positive drug test statistics can be caused by a variety of medications, vitamins, foods or even your ethnic background.

• Prescription Medications such as antibiotics like ampicillin and amoxicillin are prime examples.  Quite a few prescription pain medications should be of immediate concern.
• Over The Counter Medications such as night-time cold medications can cause a false positive test.  This is particularly true of the liquid cold relievers that contain members of the ephedrine family.  Some common weight loss products are also risky, as well as some nasal sprays and some over the counter asthma products.
• Foods can sometimes cause a false positive test as proven by the poppy-seed bagel and poppy-seed cake.
• Common Vitamins Supplements can cause a false positive test.  Riboflavin (B2) might return a false positive test for THC.  Many herbs that contain B vitamins are risky.
• Diseases such as diabetes, liver disease, and kidney infections may register as a false positive for several drugs of concern.
• Ethnic Susceptibility – People with dark skin are particularly susceptible to a false positive drug screen.
• Second Hand Use – Although this is less proven, second-hand use has to be considered for a false positive drug screen.  The testers again say it can not happen.  But we know what their word can be worth.  No sense taking a chance.

How To Make Sure You Pass Your Drug Test?

False Positive Drug Test Or Not, You Still Need To Make Sure You Pass Your Drug Test. 

• How To Pass A Urine Drug Test – Almost all false positive drug tests are for the urine drug test.  The on-site, workplace, random and home drug testing kits cause the majority of the urine drug screen false positive tests.  The laboratory based Gas Chromatography-Mass Spectrometry, a Liquid Chromatography-Tandem Mass Spectrometry or a Enzyme Immunoassay urine drug tests are very accurate and the chances for a false positive drug t here are slim.
• How To Pass A Saliva Drug Test – Conclusive research for the saliva false positive drug test is not yet complete, but it probably occurs frequently.
• How To Pass A Hair Drug Test – The chances for a false positive hair follicle drug test are very remote.  The hair test is preformed in a lab under strict guidelines.
• How To Pass A Blood Drug Test – The chances for a false positive blood test for the actual drug in your blood test looks for the actual drug in your blood.

The Best Researched False Positive List – Period.

First Of All – Yes, This List Is Real. This data comes from the manufacturer’s own internal documents.  Always Test Clean has assembled the most comprehensive list of what can cause a false positive drug test.  Based upon the testers own internal documents which they call Cross-Reactivity Guides.  NOTE:  The products that can cause a false positive drug test do not necessarily cause one every time, nor with every drug test.  There are many variables that need to be taken into consideration.

What Can Cause A False Positive Drug Test:

• Amphetamines
• Anabolic Steroids
• Barbiturates
• Benzodiazepines
• Cocaine
• Codeine
• Ecstasy
• Heroin
• LSD
• Marijuana
• MDMA
• Methadone
• Methamphetamine
• Morphine
• Opiates
• Oxycodone
• PCP
• Phencyclidine
• Synthetic Opiates
• Tricyclic Antidepressants

Causes Of A False Positive For Amphetamines.

1. 4-Way Nasal Spray
2. A.R.M.
3. AcetAM
4. Actifed
5. Adderall
6. Afrin
7. Afrinol
8. Alka Seltzer Plus
9. Allerest
10. Amantadine
11. Amesec
12. Amfepramone
13. Amineptine
14. Amphetaminil
15. Aralen
16. Atabrine
17. Bayer Select Maximum
18. Benzedrine
19. Benzphetamine
20. Biphetamine
21. Brompheniramine
22. Bronkaid
23. Bronkotabs
24. Bupropion
25. Caldecon
26. Captagon
27. Cathne
28. Cheracol Sinus
29. Chiorpromazine
30. Chloroquine
31. ClaritinD
32. Clobenzorex
33. Contact
34. Contact Non-Drowsy Formula Sinus Caplets
35. Contact Severe Cold Formula
36. Cylert
37. Deprenyl
38. Desipramine
39. Desoxyephedrine
40. Dexamphetamine Sulphate
41. Dexatrim
42. Dexdenfluramine
43. Dexedrine
44. Dexfenfluramine
45. DextroAmphetamine
46. Dextromethorphan Hydrobromide
47. Diabetes
48. Didrex
49. Dimetapp
50. Dimethylamylamine
51. Dinintel
52. DMAA
53. Dopergin
54. Dristan Cold Caplets
55. Dristan Nasal Spray
56. Drixoral Cold Or Flu
57. Durophet
58. DXM
59. Efidac/24
60. Eldepryl
61. Ephedra Sinica
62. Ephedrine
63. Ephedrol
64. Estasule Minus
65. Etafediabe
66. Ethylamphetamine
67. Eve
68. Famprofazone
69. Fen Phen
70. Fencamine
71. Fenelylline
72. Fenfluramine
73. Fenoprofin
74. Fenproyorex
75. Finedal
76. Fluoxetine
77. Fluoxetine Hydrochloride
78. Fluspirilene
79. Furfenorex
80. Glucophage
81. Hydroymethamphetamone
82. Labetalol
83. Inderal
84. Lisuride
85. Liver Disease
86. Loratadine
87. Love Drug
88. Ma Huang
89. Maximum Strength Sudafed Sinus
90. MDA
91. Mefenorex
92. Mepacrine
93. Mephentermine
94. Metformin
95. Methoxyphenamine
96. Methphenidate
97. Methylenedioxyamphetamine
98. Mexiletine
99. Mexitil
100. Mini-Thins
101. Morax
102. Nasal Sprays
103. Neosynephren
104. Neosynephrine
105. Norpramine
106. Nyquil
107. Obetrol
108. Olamine
109. Ornade
110. Ortain
111. Pemoline
112. Phendimetrazine
113. Phenegan-D
114. Phenmetrazine
115. Phentermine
116. Phenylephrine
117. Phenylpropanolamine
118. Phenypropan
119. Phenypropanolamine
120. Pholedrine
121. Pondinil
122. Prenylamine
123. Procainamide
124. Propranolol
125. Propylephedrine
126. Prozac
127. Pseudoephedrine
128. Pseudoephedrine
129. Pseudoephedrineare
130. Quadrinal
131. Quelichine
132. Quelidrine
133. Quetiapine
134. Quibron Plus
135. Quinacrine
136. Rantidine
137. Redux
138. Ritalin
139. Selegiline
140. Seroquel
141. Sinarest
142. Sinex
143. Sinus Excedrin Extra Strength Caplets
144. Sudafed
145. Tedral
146. Tegisec
147. Trandate
148. Theophylline Calcium Glycinate
149. Trazodone
150. Triaminic 12
151. Triaminicin
152. Tricyclic Antidepressants
153. Triprolidine
154. Tylenol Cold
155. Tylenol Sinus Gelcaps, Maximum Strength
156. Vicks Inhaler
157. Wellbutrin
158. Zantac
159. Zyrtec

Peer Reviewed:

Practical Pain Management – Ask the Expert: False Positive Amphetamine Urine Screens

Back to Menu

Causes For A False Positive For Anabolic Steroids.

1. DHEA
2. Nandrolone

List of Anabolic Steroids.

• Testosterone
  • Axiron
  • Androgel
  • Fortesta
  • Testopel
  • Striant
  • Delatestryl
  • Testim
  • Androderm
• Androstenedione
• Stanozolol (Winstrol)
• Nandrolone (Deca-Durabolin)
• Methandrosteolone (Dianabol)

Peer Reviewed:

Journal of Analytical Toxicology –  Screening for Anabolic Steroids in Urine.

Back to Menu

Causes For A False Positive For Barbiturates.

1. Acro
2. Advil
3. Aleve
4. Allobarbital
5. Alphenol
6. Amytal
7. Antrocol Elixor
8. Aprobarbital
9. Barbital
10. Butabarbital
11. Butalbital
12. Butisol
13. Dilantin
14. Donnatal
15. Fenoprofin
16. Fioricet
17. Ibuprofen
18. Lase Plus
19. Luminal
20. Motrin
21. Mudrane GC
22. Mysoline
23. Naproxen
24. Nembutal
25. Pentobarbital
26. Phenobarbital
27. Phenobarbitone
28. Phenytoin
29. Primidone
30. Rexatal
31. Secobarbital
32. Seconal Sodium
33. Solfoton
34. Soneryl
35. Tuinal

List Of Barbiturates

• Brand Names:
  • Allonal
  • Amytal Sodium
  • Brevital
  • Butabarb
  • Butalan
  • Buticaps
  • Butisol Sodium
  • Luminal
  • Mebaral
  • Mephyltaletten
  • Nembutal
  • Nembutal Sodium
  • Oramon
  • Pentothal
  • Phemiton
  • Prominal
  • Sarisol
  • Seconal
  • Somnifaine
  • Surital
• Generic Names:
  • Amobarbital sodium
  • Aprobarbital
  • Butabarbital
  • Mephobarbital (methylophenobarbital)
  • Methohexital
  • Pentobarbital
  • Phenobarbital
  • Primidone
  • Secobarbital
  • Thiopental sodium
  • Thyamilal

Peer Reviewed:

National Library Of Medicine – Commonly prescribed medications and potential false-positive urine drug screens.

Back to Menu

Causes For A False Positive For Benzodiazepines (Benzo).

1. Alprazolam
2. Anti Anxiety Medication
3. Anxitol
4. Ativan
5. Benadryl
6. Black Pearls
7. Briantum
8. Bromazepam
9. Centrax
10. Chinese Herb Pills
11. Chlorazepate
12. Chlordiazepoxide
13. Clobazam
14. Clonazepam
15. Clonopin
16. Clorazepate
17. Cows Head Pills (Chinese herb)
18. Dalmane
19. Daypro
20. Delorazepam
21. Demetrin
22. Diazemuls
23. Diazepam
24. Diphenhydramine
25. Dormonocet
26. Estazolam
27. Flunitrazepam
28. Flurazepam
29. Frisium
30. Halcion
31. Klonopin
32. Lerisum
33. Lexotan
34. Libritab
35. Librium
36. Limbitrol
37. Loprazolam
38. Lorazepam
39. Lormetazepam
40. Medacepan
41. Medazepam
42. Miracle Herb Pills (Chinese herb)
43. Mogadon
44. Niravam
45. Nitrazepam
46. Nobritol
47. Nobrium
48. Noctamide
49. Oxaprozin
50. Oxazepam
51. OxPam
52. Potentsex Pills (Chinese Herb)
53. Prazepam
54. Prescription Sleeping Pills
55. ProSom
56. Restoril
57. Rivotril
58. Rohypnol
59. Serax
60. Sertraline
61. Somnite
62. Stesolid
63. Temazepam
64. Tranxene
65. Triazolam
66. Tung Sheuh Pills
67. Valclair
68. Valium
69. Valrelease
70. Zoloft

List Of Benzodiazepines

• Chlordiazepoxide (Librium)
• Clorazepate (Tranxene)
• Diazepam (Valium)
• Flurazepam
• Oxazepam (Serax)
• Temazepam (Restoril)
• Clonazepam (Klonopin)
• Alprazolam (Xanax)
• Lorazepam (Ativan)
• Triazolam (Halcion)

Peer Reviewed:

Medscape – Commonly Prescribed Medications and Potential False-positive Urine Drug Screens

Back to Menu

Causes For A False Positive For Cocaine.

1. Amoxicillin
2. Ampicillin
3. Coca Flour
4. Coca Leaf
5. Coca Oil
6. Coca Tea
7. Diabetes
8. Lidocaine
9. Novocain
10. Tonic Water

Peer Reviewed:

Oxford Academic  – The Clinical Impact of a False-Positive Urine Cocaine Screening Result on a Patient’s Pain Management.

Back to Menu

Causes For A False Positive For Codeine.

1. Acetaminophen with Codeine
2. Actifed with Codeine
3. Ambenyl
4. Broncholate CS
5. Cheracol
6. Codinal PH
7. DC Cough Syrup
8. Deconsal
9. Dimetane
10. Isoclor Expectorant
11. Novahistine DH
12. Novahistine Expectorant
13. Nucofed ExpecTorant
14. Par-Glycerol-CV
15. Pediacof
16. Phenaphen with Codeine
17. Phenergan VC
18. Poly-Histine
19. Robitussin A-C
20. Robitussin DAC
21. Triaminic Expectorant with Codeine
22. Tussar 2
23. Tussar SF
24. Tussi-Organiden
25. Tylenol with Codeine
26. Accutrim

Peer Reviewed:

U.S. Pharmacist – The Clinical Impact of a False-Positive Urine CocaineUrine Drug Screening: Minimizing False-PositivesScreening Result on a Patient’s Pain Management.

Back to Menu

Causes For A False Positive For Ecstasy.

1. Adam
2. Afrin
3. Alavert
4. Allerest
5. Amfepramone
6. Amineptine
7. Asthma Medications
8. Benzphetamine
9. Bronkaid
10. Cathne
11. Claritin
12. Claritin Hives Relief
13. ClaritinD
14. Clear (Atadine)
15. Clear Children’s (Atadine Children’s)
16. Clobenzorex
17. Contact
18. Cylert
19. Deprenyl
20. Desoxyephedrine
21. Dexatrim
22. Dexdenfluramine
23. Dextromethorphan
24. Diabetes
25. Dimetapp
26. Dopergin
27. DXM
28. E (Slang)
29. Ecstasy (Slang)
30. Eldepryl
31. Ephedra Sinica
32. Ephedrine
33. Etafediabe
34. Famprofazone
35. Fenelylline
36. Fenproyorex
37. Lisuride
38. Liver Disease
39. Ma Huang
40. Marax
41. MDMA
42. Mefenorex
43. Mephentermine
44. Mesocarb
45. Methoxyphenamine
46. Methphenidate
47. Methylenedioxymethamphetamine
48. Mini-Thins
49. Morazone
50. Nyquil
51. Ohm Allergy Relief
52. Pemoline
53. Phendimetrazine
54. Phenegan-D
55. Phenhenylpropanolamine
56. Phenmetrazine
57. Phentermine
58. Pholedrine
59. Primatine Tablets
60. Propylephedrine
61. Pseudoephederine
62. ReduxRitalin
63. Robitussin Cold Or Flu
64. Selegiline
65. Sudafed
66. Tavist-D
67. Tylenol Sinus
68. Vicks Inhaler
69. Vicks Nasal Spray
70. Vicks Nyquil
71. XTC (slang)

Peer Reviewed:

National Library Of Medicine – False Positive For Amphetamine Or Ecstasy.

Back to Menu

Causes For A False Positive For Heroin.

1. Bronkaid
2. Nyquil

Peer Reviewed:

National Library Of Medicine – Toxicologic Testing for Opiates: Understanding False-Positive and False-Negative Test Results

Back to Menu

Causes For A False Positive For LSD.

1. Amitriptyline
2. Artane
3. Bentyl
4. Bromocription
5. Buproprion
6. Buspirone
7. Cafergot
8. Cardizem
9. Cephradine
10. Chlorpromazine
11. Diltiazem
12. Doxepin
13. Efotamine
14. Elavil
15. Ergostat
16. Fentanyl
17. HaloperidolHydergine
18. Labetolol
19. Lisuride
20. Lysergol
21. Fentanyl
22. Fluoxetine
23. Methamphetaminesysergiside
24. Methylphenidate
25. Methysergiside
26. Metoclopramide
27. Norpramine
28. Prochlorperazine
29. Prozac
30. Risperidone
31. Ritalin
32. Sertraline
33. Trazodone
34. Trandate
35. Triprolidine
36. Verapamil
37. Wellbutrin
38. Wigraine
39. Zoloft

Peer Reviewed:

Clinical Chemistry – False-Positive Lysergic Acid Diethylamide Immunoassay Screen Associated with Fentanyl Medication

Back to Menu

Causes For A False Positive For Marijuana (Weed – THC – Cannabinoid).

1. Aciphex
2. Advil
3. Aleve
4. Anaprox
5. Ansaid
6. Atripla
7. B2 Vitamin
8. Bayer Select Pain Relief Formula
9. Cannabis Seed
10. Clinoril
11. Cramp End Tablets
12. Datril
13. Dexlansoprazole
14. Diabetes
15. Dolobid
16. Dopergin
17. Dronabinol
18. Edecrin
19. Efavirenz
20. Esomeprazole
21. Excedrin IB
22. Feldene
23. Fenoprofin
24. Flurbiprofen
25. Genpril
26. Haltran
27. Hempseed Oil
28. Ibuprin
29. Ibuprofen
30. Indocin
31. Lansoprazole
32. Lisuride
33. Liver Disease
34. Lodine
35. Marinol
36. Meclomen
37. Medipren
38. Mediprim
39. Midol
40. Motrin
41. Naprosyn
42. Naproxen
43. Navonaprox
44. Nexium
45. NSAIDS
46. Nuprin
47. Omeprazole
48. Orudis KT
49. Pamprin
50. Pantoprazole
51. Phenergan
52. Prevacid
53. Prilosec
54. Promethazine
55. Promethegan
56. Proton Pump Inhibitors
57. Protonix
58. Rabeprazole
59. Rabeprazole Sodium
60. Relafen
61. Rufin
62. Shampoo Containing Hemp
63. Sustiva
64. Tolectin
65. Trendar Cramp Relief Formula
66. Voltaren
67. Zegerid
68. Riboflavin
69. Vitamin B2

Peer Reviewed:

Practical Pain Management – False-Positive Screen for Marijuana

Back to Menu

Causes For A False Positive For MDMA.

1. Accutrim
2. Adam
3. Afrin
4. Alavert
5. Amfepramone
6. Amineptine
7. Asthma Medications
8. Benzphetamine
9. Bronkaid
10. Cathne
11. Claritin
12. Claritin Hives Relief
13. ClaritinD
14. Clear (Atadine)
15. Clear Children’s (Atadine Children’s)
16. Clobenzorex
17. Contact
18. Cylert
19. Deprenyl
20. Desoxyephedrine
21. Dexatrim
22. Dexdenfluramine]
23. Dextromethorphan
24. Diabetes
25. Dimetapp
26. Dopergin
27. DXM
28. E (Slang)
29. Ecstasy (Slang)
30. Eldepryl
31. Ephedra Sinica
32. Ephedrine
33. Etafediabe
34. Famprofazone
35. Fenelylline
36. Fenproyorex
37. Lisuride
38. Liver Disease
39. Ma Huang (Chinese herb)
40. Marax
41. MDMA
42. Mefenorex
43. Mephentermine
44. Mesocarb
45. Methoxyphenamine
46. Methphenidate
47. Methylenedioxymethamphetamine
48. Mini-Thins
49. Morazone
50. Nyquil
51. Ohm Allergy Relief
52. Pemoline
53. Phendimetrazine
54. Phenegan-D
55. Phenhenylpropanolamine
56. Phenmetrazine
57. Phentermine
58. Pholedrine
59. Primatine Tablets
60. Propylephedrine
61. Pseudoephederine
62. Redux
63. Ritalin
64. Robitussin Cold Or Flu
65. Selegiline
66. Sudafed
67. Tavist-D
68. Tylenol Sinus
69. Vicks Inhaler
70. Vicks Nasal Spray
71. Vicks Nyquil
72. XTC (slang)

Peer Reviewed:
University of Rochester– MDMA Drug Screen (Urine)

Back to Menu

Causes For A False Positive For Methadone.

1. Advil PM
2. Doxylamine
3. Methadose
4. Physetone
5. Quetiapine
6. Seroquel
7. Tylenol PM
8. Unisom

Peer Reviewed:

Clinical Chemistry – False-Positive Immunochemical Screen for Methadone Attributable to Metabolites of Verapamil.

Back to Menu

Causes For A False Positive For Methamphetamine.

1. Accutrim
2. Adam
3. Adderall
4. Afrin
5. Alavert
6. Allerest
7. Amfepramone
8. Antihistamines In General
9. Bentyl
10. Bronkaid
11. Bupropion
12. Cathne
13. Claritin
14. Claritin Hives Relief
15. Clear (Atadine)
16. Clear Children’s (Atadine Children’s)
17. Combivent Inhaler
18. Concerta
19. Contact
20. Contact Severe Cold Formula
21. Desoxyn
22. Dexatrim
23. Diabetes
24. Dimetapp
25. D-Methamphetamine
26. E (Slang)
27. Ecstasy (Slang)
28. Elavil
29. Eldepryl
30. Ephedrine
31. Etafediabe
32. Fencamine
33. Fluoxetine
34. Furfenorex
35. Glucophage
36. Gradumet
37. L-Methamphetamine HCL
38. Labetalol
39. Marax
40. MDMA
41. Mesocarb
42. Metformin
43. Methedrine
44. Methylenedioxymethamphetamine
45. Methylphenidate
46. Morazone
47. Nyquil
48. Ohm Allergy Relief
49. Phenegan-D
50. Phenergan
51. Phenhenylpropanolamine
52. Phenylpropanolamine
53. Pholedrine
54. PPA
55. Primatine Tablets
56. Prozac
57. Pseudoephedrine
58. Sudafed
59. Pylorid
60. Redux
61. Ritalin
62. Robitussin Cold Or Flu
63. Selegiline
64. Sudafed
65. Trandate
66. Trazodone
67. Tavist-D
68. Vicks Inhaler
69. Vicks Nasal Spray
70. Vicks Nyquil
71. Wellbutrin
72. XTC (slang)

Peer Reviewed:

Practical Pain Management – Methamphetamine Urine Toxicology: An In-depth Review.

Back to Menu

Causes For A False Positive For Morphine.

1. A.P.C. w/Codeine
2. Alavert
3. Alka Seltzer Plus
4. Allerest
5. Ascriptin w/Codeine
6. Astramoprh PF
7. Caldecon
8. Claritin
9. Claritin Hives Relief
10. Clear (Atadine)
11. Clear Children’s (Atadine Children’s)
12. Coffee Break
13. Contac Severe Cold Formula
14. Control
15. Cremacoat 4
16. Dietac
17. Dimetapp
18. Duramorph
19. Fiorinal w/Codeine
20. Infumorf
21. MS Contin Tablets
22. MSIR
23. Norflex
24. Nyquil
25. Ohm Allergy Relief
26. Rescudose
27. Sinarest
28. Sine Off
29. Sinubid
30. Soma
31. Soma with Codeine
32. Triaminicin
33. Triminicol
34. Tussagesic
35. Unisom Nighttime Sleep Aid

Peer Reviewed:

Health Partners – Interpretation of Opiate Urine Drug Screens

Back to Menu

Causes For A False Positive For Opiates.

1. AcetAM
2. Amesec
3. Amisulpride
4. Amogel PG
5. Ampicin
6. Avelox
7. Benylin
8. Bronkaid
9. Bronkotabs
10. Capital Or Codeine Oral Solution
11. Cipro
12. Cipro XR
13. Ciprofloxacin
14. Co-Codamol
15. Codafen
16. Codafen Continus
17. Codeine
18. Codeine Linctus
19. Codeine Phosphate
20. Co-dydramol
21. Cold Remedies with Dextromethorphan
22. Comtrex
23. Continus
24. Cyclimorph
25. Delsym
26. Demerol
27. Dextromethorphan
28. DHC
29. Diabetes
30. Diabismul
31. Diocalm
32. Doco Children’s Cough Syrup
33. Donnagel -PG
34. Dopergin
35. Doxylamine
36. Dristan Cough Formula
37. DXM
38. Elavil
39. Empirin w/Codeine
40. Enoxacin
41. Entersan
42. Ephedrol
43. Estasule Minus
44. Ethylmorphine
45. Factive
46. Fluoroquinolone
47. Galenphol
48. Gemifloxacin
49. Hamantashen
50. Hold Cough Suppressant
51. Hydrostat
52. InfanTol Pink
53. Koalin Or Morphine Mixture
54. Levofloxacin
55. Lisuride
56. Liver Disease
57. Loratab
58. Lorcet
59. Lortab
60. Margestic
61. Migraleve
62. Morax
63. Morcap
64. Morphine Sulfate
65. Moxifloxacin
66. Norfloxacin
67. Novocain
68. Nyquil
69. Ofloxacin
70. Opazimes
71. Oramorph
72. Papaverine
73. Paracetamol with Codeine
74. Paramol
75. Paregoric
76. Pavacol-D
77. Pedacare
78. Pediatric
79. Pediatric BP
80. Pefloxacin
81. Percocet
82. Percovil
83. Pholcodine
84. Poppy Seeds
85. Preparations
86. Procaine
87. Proquin XR
88. Purim Cookies
89. Quadrinal
90. Quelichine
91. Quelidrine
92. Quinine in Tonic Water
93. Remedeine Forte
94. Rifampicin
95. Rifampin
96. Robitussin
97. Robitussin DM
98. Romilar
99. Roxanol
100. Severedol
101. Silexin
102. Solpadol
103. St. Joseph’s Cough Syrup
104. Strong BP
105. Tedral
106. Thebacon
107. Theophylline Calcium Glycinate
108. Trucal
109. Tussinic
110. Tylenol 3
111. Tylenol 4
112. Tylenol with Codeine
113. Tylex
114. Unisom
115. Vicks Cough Syrup
116. Vicks Formula 44M
117. Vicodin
118. Wygesic

List Of Opiates

• Codeine
• Hydrocodone (Vicodin, Hycodan)
• Morphine (MS Contin, Kadian)
• Oxycodone (Oxycontin, Percoset)
• Hydromorphone (Dilaudid)
• Fentanyl (Duragesic)

Peer Reviewed:

National Library Of Medicine – Toxicologic Testing for Opiates: Understanding False-Positive.

Back to Menu

Causes For A False Positive For Oxycodone.

1. Hydrocodone
2. Numorphan
3. Oxycontin
4. Oxymorphone
5. Roxicet
6. Suboxone

Peer Reviewed:

U. S. Pharmacist – Urine Drug Screening: Minimizing False-Positives and False-Negatives to Optimize Patient Care.

Back to Menu

Causes For A False Positive For PCP.

1. Advil PM
2. Aleve
3. Benadryl
4. Delsym
5. Dextromethorphan.
6. Diphenhydramine
7. Doxylamine
8. Effexor
9. Effexor Tablets
10. Effexor XL
11. Ibuprofen
12. Lamictal
13. Lamotrigine
14. Motrin
15. naproxen
16. Robitussin
17. Tylenol Simply Sleeps
18. Tylenol PM
19. Tramadol
20. Ultram
21. Unisom
22. Venlafaxine Hydrochloride

Peer Reviewed:

National Library Of Medicine – How Often Do False-positive Phencyclidine (PCP) Urine Screens Occur with Use of Common Medications?

Back to Menu

Causes For A False Positive For Phencyclidine.

1. Chlorpromazine
2. Coproximal
3. Darvocet
4. Dextropropoxyphene
5. Doxylamine
6. Meperidine
7. Venlafaxine

Peer Reviewed:

National Library Of Medicine – How Often Do False-positive Phencyclidine (PCP) Urine Screens Occur with Use of Common Medications?

Back to Menu

Causes For A False Positive For Synthetic Opiates.

1. Buprenex
2. Buprenorphine
3. Darvon
4. DihyroCodeine
5. Dilaudid
6. Dolophine
7. Homatropine Methylbromide
8. Hycodan
9. Hydromorphone
10. Methadone
11. Methamphetaminesadone
12. Numorphan
13. Oxycodone
14. Oxymorphone
15. Paracodine
16. Percodan
17. Propoxyphene
18. Tramadol
19. Synalgos
20. Vicodin ES

List Of Semi-Synthetic and Synthetic Opioids

• Buprenorphine
• Fentanyl
• Hydrocodone
• Hydromorphone
• Methadone
• Oxycodone
• Oxymorphone
• Tramadol

Peer Reviewed:

Health Partners  – How Often Do False-positive Interpretation of Opiate Urine Drug Screenshencyclidine (PCP) Urine Screens Occur with Use of Common Medications?

Back to Menu

Causes For A False Positive For Tricyclic Antidepressants.

1. Amitriptyline
2. Benadryl
3. Carbamazepine
4. Chlorpromazine
5. Cyclobenzaprine
6. Cyproheptadine
7. diphenhydramine
8. Doxepin
9. Flexeril
10. Gamanil
11. Lentizol
12. Lofepramine
13. Lomont
14. Norcyclobenzaprine
15. Oxcarbazepine
16. Perphenazine
17. Quetiapine Fumarate
18. Sinequan
19. Seroquel
20. Thorazine
21. Thioridazine
22. Trimeprazine
23. Triptafen
24. Trileptal
25. Tryptizol
26. Xepin

List Of Tricyclic Antidepressants:

• Amitriptyline.
• Amoxapine.
• Desipramine (Norpramin)
• Doxepin.
• Imipramine (Tofranil)
• Nortriptyline (Pamelor)
• Protriptyline (Vivactil)
• Trimipramine (Surmontil)

Peer Reviewed:

ARUP Laboratories – Tricyclic Antidepressant Detection

Back to Menu

References:

List Of Internal Urine Drug Test Manufacturer’s Documents Showing Known Cross Reactants.  Below is a collection of (32) of the most popular urine drug test internal lists of Cross Reactants that can cause a false positive drug tests. The term for a false positive is “Cross Reactant”.  Please note that not all Cross Reactants will cause a false positive with each and every urine drug test. 

You Have Every Right To Ask For The Manufacturer Of The Urine Drug Test You Take.

1. Acrobiotech False Positive Guide
2. ADS False Positive Guide
3. AIT Labs False Positive Guide
4. Alere False Positive Guide
5. Burlingtonlabs False Positive Guides
   • For Amphetamines
   • For Barbiturates
   • For Benzodiazepine
   • For Buprenorphine
   • For Cocaine
   • For Ecstasy
   • For Heroin
   • For Marijuana
   • For Methadone
   • For Nicotine
   • For Opiate
   • For Oxycodone
   • For Propoxyphene
6. Drug Check False Positive Guide
7. Ecommunity Physicians False Positive Guide
8. Howard False Positive Guide
9. Lewisburg Prison Project.org Bulletins 6.4
10. Medtox False Positive Guide
11. Mossman False Positive Guide
12. Nal-VonMinden False Positive Guide
13. Oxfordhouse False Positive Guide
14. Physicians Drugs Guide For False Positives
15. Redwood Toxicology False Positive Guide
16. RSI False Positive Guide
17. RTL False Positive Guide
18. US Screening Source False Positive Guide
19. Wakemed False Positive Guide

Back to Cross Reactivity Guide

20. Journal Of Family Practice – What common substances can cause false positives on urine screens for drugs of abuse?
21. Drugs.com – Can a Drug Test Lead to a False Positive?
22. Good RX – These 15 Medications Can Cause a False Positive on Drug Tests.