What Can Cause A False Positive For Opiates

What Can Cause A False Positive For Opiates?

If you are job hunting, at some point you will be asked to provide a sample of your urine to be tested for the presence of illicit drugs. If you test positive, you can lose the job you are aiming for. Unfortunately, you can also fail a drug test even if you are not a drug user. This often occurs from using over-the-counter drugs and some food resulting in a false positive.

  • Urine tests are commonly used as a drug screening method to analyze the presence of prescription meds and illicit drugs including marijuana, opioids (narcotics), PCP, cocaine, alcohol, benzodiazepines, and amphetamines.
  • Although quite rare, drug tests may result in a false positive even if you do not take illicit drugs.
  • Bagels, cough suppressants, and other medications and food items have been known to contain small traces of drugs.

Vitamin B supplements, Riboflavin (B2) in particular contains B vitamins that can result in your drug test showing a false positive.

Many commercially advertised riboflavin are synthesized from fermented plants or lactose carbohydrates although there is other riboflavin derived from hemp seed oils. Traces of THC or tetrahydrocannabinol, which happens to be the psychoactive ingredient found in marijuana, can show up in your urine.

Pseudoephedrine, the main ingredient used to make the synthetic amphetamine OTC is also used in making meth.

Medline Plus explains that medications for colds alleviate some of the symptoms of colds by temporarily relieving the sinus from pressure and congestion by narrowing blood vessels in nasal passages. On the other hand, it may do you more harm than actual good if you are taking a drug test. During the annual meeting of the American Psychiatric Association in 2010, a review was presented claiming that cold medicine can result in a positive analysis of amphetamines.

You may need to skip poppy seed bagels for breakfast if you are going to take a drug test as poppy seeds have traces of opiates such as codeine and opium.

It can show up in your urine even 2 days after eating food with this ingredient. Discovery Channel’s “MythBusters” tested poppy seeds on two volunteers taking a drug test for OTC. At first, the volunteers were tested for the presence of opiates at the beginning of the experiment and both resulted in a negative on the initial test. The first volunteer was given 3 poppy seed bagels to eat, while the second volunteer was given poppy seed cake. Both were again tested for opiates 30 minutes after eating resulting in positive for opiate use. After 16 hours, the volunteers were again tested to produce the same positive result.

Drinking tonics and gin the night before you take a drug test may skew your results.

Quinine water, the other term for tonic water, was originally created to deliver the antimalarial drug quinine. Taking in tonic water in large quantities can result in a false positive for opiates. In a study that has been published in the “Addictive Behaviors” journal, it has been revealed that what is supposed to be evidence of illegal drug use was actually the result of consuming tonic water. Research also shows that a urine drug test can generate a false positive result more than other types of drug tests.

In the United States, there are more than 1,000 labs testing for drugs. Among these, only about a hundred meet federal standards. Also, many states do not regulate laboratories. As such, some may yield a false drug test result and is responsible for roughly 25% of inaccurate results. Also, many saliva and urine drug tests are taken outside testing laboratories by those who are neither trained nor qualified to do the job.


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