What causes false positives?

[sands of time]

Isn't it true that such things as ephedra can cause false positives for amphedamines?





What else can cause false positives on drug tests?

[str8ballin]

Ok,I just did a search over the internet and here's what I came up with for false positives for amphetamines:

Over-the-counter cold and allergy remedies that contain ephedrine, pseudoephedrine, propylephedrine, phenylephrine or desoxyephedrine: Nyquil, Contact, Sudafed, Allerest 12 Hour, A.R.M., Triaminic 12, Ornade, Tavist-D, Dimetapp, Sinex, Neosynephrine, Actifed, Bayer Select Maximum Strength Sinus Pain Relief Caplets, Contact Non-Drowsy Formula Sinus Caplets, Dristan Cold Caplets, Maximum Strength Sine-Aid Tablets, Maximum Strength Sudafed Sinus Caplets, Maximum Strength Tylenol Sinus Gelcaps, No Drowsiness Sinarest Tabs, Sinus Excedrin Extra Strength Caplets, Cheracol Sinus, Drixoral Cold and Flu, Efidac/24, Phenegan-D, Robitussin Cold and Flu, Vicks Nyquil.
Over-the-counter diet aids containing phenylpropanolamine: Dexatrim, Accutrim
Over-the-counter nasal sprays: Vicks inhaler, Afrin
Asthma medication: Marax, Bronkaid tablets, Primatine Tablets
Prescription medication: Amfepramone, Cathne, Etafediabe, Morazone, phendimetrazine, phenmetrazine, benzphetamine, fenfluramine, dexfenfluramine, dexdenfluramine, Redux, mephentermine, Mesocarb, methoxphenamine, phentermine, amineptine, Pholedrine, hydroymethamphetamine, Dexedrine, amifepramone, clobenzorex, fenproyorex, mefenorex, fenelylline, Didrex, dextroamphetamine, methphenidate, Ritalin, pemoline, Cylert, selegiline, Deprenyl, Eldepryl, Famprofazone

[Woodman]

I dunno!: - /

But poppy seeds will make you test positive for opiates.

[BA]

freeyayo


Good post!!


There are more than 250 over-the-counter medications and prescription drugs that could cause a False Positive.

Filling out the lab test form to include over the counter medications that cause the same positive results as the illegal drug that might be consumed would be a good idea. If a positive result occurs on the test, a basis will have been laid for an appeal. Remember that the negative error rate is just as large or larger than the positive error rate. Many people using drugs escape detection.

Pain relievers such as Advil, Nuprin, Motrin, Midol, Trendar and Ibuprofen are known to cause false positives for Marijuana use. Second hand smoke inhalation from a rock concert or from being with someone who is smoking marijuana could also cause a false positive for THC. Hemp seed products, such as hemp burgers or food products containing hemp oil will also cause false positives for THC. Twelve ounces of hemp seed products ingested before a test will cause you to fail your test and has held up as a defense in at least two federal court cases.

Dristan Nasal Spray, Neosynephren, Vicks Nasal Spray, Sudafed and other medications containing ephedrine or phenypropanolamine could cause a false positive reading for Amphetamines.

Vicks Formula 44M containing Dextromethorphan, and Primatene-M containing perylamine as well as the pain reliever Demerol, Quinine water, poppy seeds and prescription anti-depressant Elavil will cause a false positive for opiates.

Nyquil Nighttime Cold Medicine will cause a false positive for Methadone.

Antibiotics such as Ampicillin and Amoxicillin will cause a false positive for cocaine.

Diasepam as well as Dextromethorophan (an ingredient in some cough medicines) will cause a false positive for PCP.

Tips for taking the test:
You will want to drink as much fluid as possible a couple of days prior to the test. Water, tea, soft drinks, etc. are fine. Drink 3 to 4 quarts of fluid. On the day of the test, cut back your fluid consumption to a normal level. Excessively diluted urine samples will cause suspicion.

Never give the testers your first urine of the day. Toxins build up overnight and are heaviest in the morning. If possible void the first and last portion of your urine stream into the toilet. Only catch the middle of your urine stream for the sample. This portion will have the lowest amount of toxins.



BA

[sands of time]

Hmm, I bet the comfirmation test would rule most of these out though

[Dextro]

Wellbutrin (bupropion) can cause you to show up positive for amphetimines, it's a prescription antidepressant. I found a link with more info on it if you want to verify for yourself: http://ramindy.sghms.ac.uk/~ltg/bupropion.htm

[BA]

Dextro


Thanks for the heads up on thewellbutrin, my son has to take a piss test on the 15th, he'll know what to tell them if he's called in on it.


BA