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can poppy seeds make you test positive for weed

However, it may be possible to exceed the morphine threshold by eating foods with poppy seeds and USADA can’t predict how long morphine or morphine metabolites from poppy seeds will stay in your system. The most conservative approach would be to avoid poppy seeds a few days before and during competitions.

Research shows that morphine and codeine can sometimes be detected in the urine up to 48 hours after ingestion of poppy seeds from some pastries, such as bagels, muffins, and cakes (see reference one for a free article on this topic).

Lachenmeier DW, Sproll C, Musshoff F. Poppy seed foods and opiate drug testing—where are we today? Ther Drug Monitor. 2010 Feb; 32(1): 11-18.

Can the morphine from poppy seeds be detected in a sample?

Thevis M, Opfermann G, Schänzer W. Urinary Concentrations of Morphine and Codeine After Consumption of Poppy Seeds. J Anal Toxicol (January-February 2003) 27(1): 53-56 . URL: http://www.ncbi.nlm.nih.gov/pubmed?term=morphine%20and%20codeine%20on%20poppy%20seeds%20thevis

References

Even though most of the opium is removed from the poppy seeds during processing (usually more than 90%), in some cases, the seeds sold for use in foods still have a significant amount of opium – and thus morphine – on them. The amount of morphine residue left on the seeds depends on how well the poppy seeds are cleaned and processed, which varies depending on the country the seeds are from and how and when they were harvested.

USADA cannot predict the amount of poppy seeds you can eat and remain below the testing threshold set by WADA. **In most cases, consumption of poppy seeds in foods will not cause a positive doping test.

Pharmacokinetics in Psychiatry and Neurology: “Urine drug screens: Considerations for the psychiatric pharmacist.”

Quest Diagnostics Employer Solutions Blog: “Cannabidiol and drug tests.”

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Antihistamines

National Institute on Drug Abuse for Teens: “What is Hemp?”

These medications usually won’t interfere with your drug screens. But in rare cases, a few antibiotics are known to trigger inaccurate test results. Rifampin, which treats tuberculosis, might show up as opiates in some rapid urine screens. What’s more, the false positive result may be possible even more than 18 hours after you’ve swallowed a single dose of the antibiotic.

FDA: “Zoloft (sertraline hydrochloride) Label.”

If you hang out often with someone who puffs on pot, your urine could have traces of THC. That’s the chemical in the cannabis plant that gets you high. But chances are very low that you’ll have enough THC to trigger the positive result in the screens used by the federal government and many private employers. That’s most likely to happen right after you’re exposed to the smoke. A second test would need to confirm it.

Have you been asked to take a drug test? Maybe this caught you off guard. Screening drug tests are often required for pre-employment in the private and government sector, for athletes, students, healthcare workers, for probation or criminal activity, for opioid avoidance testing in the clinic, or after vehicle or workplace accidents. Random drug testing can also occur at any time at a workplace, during an employee physical exam, and for any reasonable suspicion of drug use.

Over-the-counter cough and cold products such as the cough suppressant dextromethorphan have been reported to lead to a false positive result for phencyclidine (PCP, angel dust) and possibly opiates (narcotics).

What drugs are tested?

Even though these tests are common, people often have questions about the possibility of false-positive results. Anyone subject to a drug screen should confirm that secondary confirmatory testing (such as gas chromatography–mass spectrometry [GC-MS] or high performance liquid chromatography) is performed on any positive result received by the lab doing your testing. 1

To help avoid this problem, the testing lab may color the water in their toilet to prevent the sample from being diluted with toilet water. The temperature of urine is also measured, to help prevent use of a substituted urine sample brought in from the outside.

Procaine or lidocaine has been noted as a defense for cocaine abuse. According to one report, benzoylecgonine is only found in nature as a metabolite of cocaine, and there would be no other valid reason for its presence in a drug screen. 2