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DEFINITION:
A False Positive is a drug free sample falsely being reported as showing
positive for drugs.
A false positive
drug test can occur for a number of
reasons including: improper laboratory procedure, mixing up samples, incorrect
paperwork and passive inhalation. But the most common cause of drug testing
false positives are cross reactants. A cross reactant is a substance which
because of its similar chemical structure to a drug or its metabolite can cause
a false positive result.
Drug Test Interaction With Medicines And Foods
Be aware that certain foods and
over-the-counter medications can cause you to test "positive" for various kinds
of drugs. Some simple examples are:
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Poppy seeds, for example, can show up on a drug test as morphine.
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Cold remedies that contain codeine can also cause a positive
result for morphine.
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Valium reportedly can produce erroneous indications of PCP
(Phencyclidine), and other cold remedies can apparently produce
false positive drug screen of
methamphetamine usage.
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The widespread availability of hemp-containing products,
including everything from hemp-seed oil nutritional supplements to hemp-seed
candy, cookies, cheese, bread, cooking oil, and general seasoning, means that
ingesting ANY of these products could potentially cause a false positive result
on a test for marijuana.
Hair and urine testing is highly susceptable to
false positive drug testing - to the point that some experts call such testing
"junk science". People with dark skin are particularily susceptable to false
drug testing results when exposure to second hand marijuana or cocaine smoke is
absorbed into their hair.
More
than 250 over the counter or prescription drugs can cause you to test positive
on a drug test.
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Pain relievers such as Advil, Nuprin, Motrin
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Menstrual cramp medications like Midol and Trendar
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Ibuprofen is known to cause positive samples for Marijuana
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Anti inflammatories such as Naproxyn
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Dristan Nasal Spray, Neosynephren, Vicks Nasal Spray, Sudafed
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Over the counter appetite suppressants which contain propanolamine
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Common nasal decongestants can cause a positive reading for Amphetamines
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Medications containing chloropromazine and fluspirilene may yield a positive
when tested for amphetamines
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Vicks Formula 44M containing Dextromethorphan, and Primatene-M containing
perylamine as well as the pain reliever Demerol, and prescription
anti-depressant Elavil test positive for opiates up to three days
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Quinine water can also cause a positive reading for opiates.
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Poppy Seeds such as the ones on a bagel from your favorite deli, represent a
potentially serious source of falsely positive results in testing opiate
abuse.
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Nyquil Nighttime Cold Medicine will test positive for Methadone up to two
days.
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Amoxicillin has caused positives for cocaine
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Diazepam tests positive for PCP
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A
small fraction of the population excrete large amounts of endogenons
lysozyme or malate dehydrogenase in their urine which can produce a positive
drug test.
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Africans and certain Orientals might test positive for marijuana due to the
pigment melanin in their skin which shows up in a dark person's urine
sample.
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Second hand marijuana or cocaine that you might inhale may give your test a
positive result for several days.
PLEASE READ THIS
DISCLAIMER: Let us
first say that not all drug tests are sensitive to all of the following and just
ingesting one or more of these ingredients will not guarantee a
drug test false positive
test. Also just by saying you have ingested one or more of these
ingredients will not automatically dismiss a false positive drug test.
Hair and urine testing is highly susceptable to
false positive drug testing - to the point that some experts call such testing
"junk science". People with dark skin are particularily susceptable to false
drug testing results when exposure to second hand marijuana or cocaine smoke is
absorbed into their hair.
Let's take a look at more specifics
in the are of false positive drug tests.
These are just guidelines and should not be taken as absolutes.
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THC / Marijuana False
Positives |
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Other Names You Might Know
|
Marijuana |
Blunt |
Grass |
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Herb |
Pot |
Reef |
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Sinsemilla |
Smoke |
Weed |
Things That Can Cause False Positives
For THC / Marijuana
Over-The-Counter Medications
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lbuprofen |
Advil |
Nuprin |
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Mediprim |
Motrin |
Cramp End Tablets |
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Bayer Select Pain Relief Formula |
lbuprin |
Medipren |
|
Excedrin IB Caplets |
Midol 200 |
Rufln |
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Genpril |
Pamprin |
Naproxen |
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Haltran |
Trendar Cramp Relief Formula |
Aleve |
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Ketoprofen |
Orudis KT |
Marinol |
Over-The-Counter Allergy , Sleep Aids and Anti-Nausea Medications
That Contain Promethazine
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Phenergan |
Riboflavin (vitamin B2) |
Edecrin |
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Promethegan |
Dronabinol |
|
Prescription Medications
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Anaprox |
Tolectin |
Feldene |
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Flurbiprofen |
Oxaprozin |
Indocin |
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Ansaid |
Ifenoprofen |
Lodine |
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Clinoril |
Dolobid |
Meclomen |
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Motrin |
Nalfon |
Orudis |
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Naprosyn |
Relafen |
Voltaren |
Other Things
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Kidney
infection |
Kidney disease |
Diabetes |
|
Liver Disease
|
Hempseed Oil |
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Cocaine False Positives |
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Other Names You Might Know
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Coke |
Crack |
Flake |
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Rocks |
Snow |
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Things That Can Cause False Positives
For Cocaine
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Amoxicillin |
Kidney
Infection |
Liver
Disease |
|
Tonic
Water |
Kidney
Disease |
Diabetes |
Back To Menu |
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Amphetamine False Positives |
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Other Names You Might Know
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Biphetamine |
Dexedrine |
Crosses |
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Black Beauties |
Hearts |
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Things That Can Cause False Positives
For Amphetamines
Over-The-Counter Medications That Contain Ephedrine,
Pseudoephedrine, Propylephedrine, Phenylephrine or Desoxyephedrine
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Nyquil |
Contact D |
Triaminic 12 |
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Sudafed |
Allerest 12-Hour |
Ornade |
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A.R.M. |
Tavist-D |
Dimetapp |
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Sinex |
Neosynephrine |
Actifed |
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Contact Non-Drowsy Formula Sinus |
Dristan Cold Caplets |
Bayer Sinus Pain Relief Caplets |
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Maximum Strength Sine-Aid Tablets |
Maximum Strengeth Sudafed Sinus |
Maximum Strength Tylenol Sinus |
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No Drowsiness Sinarest Tabs |
Sinus Excedrin Extra Sterength |
Characol Sinus |
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Drixoral Cold and Flu |
Efidac/24 |
Phenegan-D |
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Robitussin Cold and Flu |
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Over-The-Counter Nasal Sprays
Over-The-Counter Diet Aids Containing Phenylpropanolamine
Over-The-Counter Asthma Medications
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Marax |
Bronkaid tablets |
Primatine Tablets |
Prescription Medications
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Amfeprainone |
Cathne |
Etafediabe |
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Phendimetrazine |
Morazone |
Phenmetrazine |
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Benzphetamine |
Fenfluramine |
Redux |
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Dexfenfluramine |
Dexdenflurarnine |
Mephentermine |
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Mesocarb |
Methoxyphenamine |
Phentermine |
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Amineptine |
Pholedrine |
Hydroymethamphetamine |
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Dexedrine |
Amifepramone |
Clobenzorex |
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Fenproyorex |
Mefenorex |
Fenelylline |
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Didrex |
Dextroamphetamine |
Methphenidate |
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Ritalin |
Pemoline |
Cylert |
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Selegiline |
Deprenyl |
Eldepryl |
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Famprofazone |
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Other Things
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Kidney
infection |
Kidney disease |
Diabetes |
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Liver Disease
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Back To Menu |
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Opiate
False Positives |
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Other Names You Might Know
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Codeine |
Tylenol w/codeine |
Robitussin A-C |
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Florinal w/codeine |
Empirin w/codeine |
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Heroin |
Diacetylmorphine |
Horse |
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Smack |
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Methadone |
Amidone |
Dolophine |
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Methadose |
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Morphine |
Roxanol |
Duramorph |
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Opium |
Laudanum |
Paregoric |
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Dover's
Powder |
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Things That Can Cause False Positives
For Opiates
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Poppy Seeds |
Emprin |
Tylenol With Codeine |
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Capital With Codeine |
Margesic |
Rifampicin |
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Vicodin |
Percodan |
Percocet |
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Wygesic |
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Back To Menu |
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Bencodiazepine False
Positives |
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Other Names You Might Know And Can
Cause False Positives For Bencodiazepine
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Activan |
Halcion |
Librium |
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Valium |
Rohypnol |
Roofies |
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Tranks |
Xanax |
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Back To Menu |
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Barbiturate False Positives |
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Other Names You Might Know
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Amytal |
Nembutal |
Phenobarbital |
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Barbs |
Seconal |
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Things That Can Cause False Positives
For Barbiturates
Over-The-Counter Diet, Sleeping, Anti-Asthamatic Medications That
Contain
Back To Menu |
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LSD
False Positives |
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Other Names You Might Know
Over-The-Counter
and Prescription
Migraine Medications
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Egotamine |
Ergostat |
Cafergot |
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Wigraine |
Imitrex |
Hydergine |
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Bromocription |
Methysergiside |
Lisuride |
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Lysergol |
Artane |
Triprolidine |
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Amitriptyline (Elavil) |
Dicyclomine (Bentyl) |
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Over-The-Counter
and Prescription
Anti-Nausea Medications That Contain
Promethazine
Back To Menu |
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Ecstasy
False Positives |
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Over-The-Counter
and Prescription
Cold Medications
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Desoxyephedrine |
Pseudoephedrine |
Propylephedrine |
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Phenylephrine |
Ephedrine |
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Nyquil |
Contact |
Sudafed |
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Allerest |
Tavist-D |
Dimetapp |
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Phenegan-D |
Robitussin Cold and Flu |
Vicks
Nyquil |
Over-The-Counter
Diet Medications
With Phenylpropanolamine
Over-The-Counter
Nasal Sprays
Over-The-Counter
Asthma Medications
|
Marax |
Bronkaid tablets |
Primatine
Tablets |
Prescription Medications
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Amfepramone |
Cathne |
Etafediabe |
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Morazone |
Phendimetrazine |
Phenmetrazine |
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Benzphetamine |
Fenfluramine |
Dexfenfluramine |
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Dexdenfluramine |
Redux |
Mephentermine |
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Mesocarb |
Methoxyphenamine |
Phentermine |
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Amineptine |
Pholedrine |
Hydroymethamphetamine |
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Dexedrine |
Amifepramone |
Clobenzorex |
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Fenproyorex |
Mefenorex |
Fenelylline |
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Didrex |
Extroamphetamine |
Methphenidate |
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Ritalin |
Pemoline |
Cylert |
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Selegiline |
Deprenyl |
Eldepryl |
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Famprofazone |
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Other
Things
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Kidney infection |
Kidney disease |
Liver disease |
|
Diabetes |
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