Jeffrey Salazar
It is a common misconception that eating or drinking certain things can help you pass a drug test. In reality, there are several foods and drinks that can cause false positives, and it is important to be aware of these to ensure accurate test results. For example, poppy seeds can cause false positives for opiates, while pizza dough contains yeast which ferments sugar into alcohol and can lead to a false positive for alcohol or THC. Other foods to avoid include hemp seeds, coca tea, tonic water, and fatty fish. It is also important to note that certain medications and supplements can interfere with drug test results, so it is always best to consult a doctor before making any dietary changes or stopping any medications.
| Characteristics | Values |
|---|---|
| Foods to avoid | Poppy seeds, hemp seeds, fatty fish, pizza, snack bars, granola, herbal supplements, tonic water, alcohol, coca tea |
| Foods to consume | Whole, unprocessed foods—fruits, vegetables, lean proteins, and whole grains |
| Other things to avoid | Over-the-counter cold medications, strenuous exercise |
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What You'll Learn
Avoid poppy seeds, coca tea, hemp seeds, and tonic water
Drug tests are sensitive, and certain everyday substances can trigger a false-positive result. Here are some foods and drinks to avoid consuming prior to a drug test:
Poppy Seeds
Poppy seeds come from the Papaver somniferum plant, which translates to "sleep-bringing" in Latin. This hints at the presence of opiates in the plant, which are powerful compounds that induce drowsiness and sleep. While poppy seeds themselves don't contain opiates, consuming certain poppy seed products can lead to positive urine test results for opiates like morphine and codeine. This is due to the presence of opiates in the food products, and it's challenging to distinguish between opiate concentrations from poppy seeds and those from opiate drug use.
Coca Tea
Coca tea, a popular drink in South America, is derived from the coca plant, the same source as cocaine. Consuming coca tea can lead to a false-positive result for cocaine. A 2006 study found that participants who drank coca tea tested positive for cocaine metabolites two hours later, and three participants still tested positive after 36 hours.
Hemp Seeds
Hemp seeds and hemp seed oil are often used in cooking and food products. Consuming hemp seeds has been associated with false-positive urine test results for marijuana use. A 2019 study investigated the effects of consuming hemp foods daily for ten days, with hemp seed oil doses ranging from 0.09 mg to 0.6 mg. However, the highest measured THC-COOH concentration in urine was well below the confirmation threshold, indicating that it is very unlikely for hemp food consumption to interfere with a urine drug screen.
Tonic Water
Tonic water contains quinine, a drug used to treat malaria. As quinine is sometimes mixed with street drugs, its presence in a urine test can indicate illegal drug use. A 1989 study reported that consuming tonic water in a mixed drink resulted in a positive urine test for quinine.
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Don't eat fatty fish like salmon or mackerel
It is important to know what foods to avoid when preparing for a drug test. Eating the wrong thing might cause a false positive result, which could have serious consequences.
Fatty fish like salmon and mackerel are among the foods to avoid. These fish contain omega-3 fatty acids, which may impact the metabolism of THC (the active compound in cannabis). This means that eating salmon or mackerel could lead to higher detectable levels of THC in your body. The body metabolizes food, breaking it down into metabolites that may appear in blood, urine, or saliva. Eating fatty fish can affect your metabolic rate, which in turn impacts how substances are eliminated from your body.
It is recommended that you avoid eating salmon or mackerel for a few days before your test. This will help to ensure that your test results are not skewed by the presence of THC metabolites.
Other foods to avoid include those containing poppy seeds, hemp seeds, or certain spices. Poppy seeds and hemp seeds have been known to cause false positives, as they contain trace amounts of opiates and THC, respectively. Spices such as cilantro and turmeric might also trigger false positives, so it is best to skip heavily spiced dishes before your test.
In addition to the foods mentioned, certain beverages should also be avoided. Even moderate alcohol consumption can lead to detectable metabolites in urine, causing false positives. It is recommended that you refrain from drinking alcohol for at least a week before the test. While caffeine does not cause false positives, it can lead to dehydration and concentrated urine, which can affect test results. Therefore, it is best to limit coffee, tea, and energy drinks in the days leading up to the test.
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Stay away from herbal supplements and products
It is important to be aware of any herbal supplements and products that could lead to a false positive drug test result. Drug tests typically screen for cocaine, PCP, opioids, amphetamines, benzodiazepines, barbiturates, and marijuana.
Firstly, it is recommended to refrain from taking any type of supplement for at least two weeks before your drug test. This will ensure that your body has enough time to flush out any substances that could trigger a false positive.
- Poppy seeds and poppy seed tea: Poppy seeds can cause a false positive for opioids like morphine, codeine, and oxycodone. This is because the seeds can be coated with opium latex, which contains psychoactive alkaloids.
- Vitamin B supplements: Vitamin B2 (riboflavin) can be derived from hemp seed oil and can cause a false positive for THC. Large doses of vitamin B12 can lead to a false positive for amphetamines.
- CBD products: Although CBD is the non-psychoactive part of the cannabis plant, it is not well-regulated and may be contaminated with THC, leading to a positive result for marijuana.
- Turmeric: Turmeric contains curcumin, which can give false positives in drug screenings, indicating cannabis use.
- Kava: Kava is a herb that may trigger a false positive result.
- Energy drinks: Consuming energy drinks shortly before a drug test can result in a positive result for opiates.
- Vanilla extract: Consuming vanilla extract may trigger a failed drug test for alcohol consumption.
It is important to note that supplements are not regulated by the FDA, so there may be other products that could potentially cause a false positive result. Always check the ingredients and consider purchasing from brands that conduct third-party testing. Additionally, be cautious of consuming certain foods, such as snack bars and granola, which may contain hemp seeds.
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Don't drink grapefruit juice
Generally, it is fine to eat before a drug test. However, it is important to be mindful of the type of food and drink consumed, as certain items can cause a false positive result or interfere with the accuracy of the test.
One such item to avoid is grapefruit juice. While grapefruit is a nutritious fruit, packed with vitamin C and potassium, it can negatively interact with certain drugs. Grapefruit juice can affect the way medications work by altering the way they are metabolized in the body. This interaction can be influenced by the amount of grapefruit juice consumed, the type of drug, and individual factors.
Grapefruit juice has been found to increase the concentration of certain drugs in the body, such as oxycodone, leading to potential overdose toxicity. It can also block the action of transporters, reducing the amount of the drug in the body and compromising its effectiveness. For example, grapefruit juice can decrease the absorption of fexofenadine, a popular antihistamine, reducing its overall effectiveness.
Additionally, grapefruit juice can enhance the side effects of certain medications. For instance, increased consumption of grapefruit juice by patients taking ribociclib may experience enhanced side effects such as infections, changes in blood cell counts, weakness, bleeding problems, loss of appetite, abdominal pain, mouth sores, nausea, vomiting, diarrhea, hair loss, and fatigue.
Therefore, it is important to refrain from consuming grapefruit juice if you are scheduled for a drug test, especially if you are taking any medications. Always check with your doctor or pharmacist to review any potential drug interactions with grapefruit juice or other foods and drinks.
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Focus on whole, unprocessed foods
Eating whole, unprocessed foods is a good strategy to prepare for a drug test. Whole foods support natural detoxification and help keep your metabolism steady. Focus on fruits, vegetables, lean proteins, and whole grains.
Fruits and vegetables such as cucumbers, watermelon, oranges, leafy greens, beets, and avocados support liver health and enhance the body's natural detoxification processes. They also help with hydration, which is key to a successful detox.
Lean proteins are another important part of a whole-food diet. These include fish, chicken, and legumes, which provide essential amino acids to support the body's natural processes.
Whole grains are also recommended. These are a good source of fiber, which aids digestion and helps the body eliminate toxins.
In addition to a whole-food diet, regular physical activity can boost your metabolic rate and support toxin elimination. Cardio exercises, in particular, are effective for burning fat, which is where toxins are often stored. However, it is recommended to avoid intense exercise right before the test, as it may temporarily elevate metabolite levels.
It is important to note that while diet and exercise can support natural detoxification, they are not guaranteed to prevent a positive result on a drug test. The most effective way to ensure a negative result is to abstain from drug use and avoid consuming foods and beverages that may cause a false positive, such as poppy seeds, hemp seeds, and yeast-risen foods.
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Frequently asked questions
No, it is not necessary to fast before a drug test. However, it is important to avoid certain foods and substances that may cause a false positive.
Foods containing poppy seeds, hemp seeds, fatty fish like salmon and mackerel, and yeast (found in pizza dough) should be avoided. It is also recommended to refrain from herbal supplements, tonic water, and alcohol.
Yes, it is recommended to avoid coca tea, grapefruit juice, and alcoholic beverages. Even moderate alcohol consumption can lead to detectable metabolites in urine, causing false positives.
Yes, certain medications can interfere with drug test results. Consult your doctor or healthcare provider for specific advice. Some common medications that may affect urine drug tests include phenothiazines, antidepressants, and antihistamines.
It is recommended to avoid problematic foods and substances for at least 24 to 48 hours before the drug test. In some cases, such as with grapefruit juice and alcohol, it is advised to refrain from consumption for at least a week before the test.
