Well, it happened.

Your company decided to implement its random drug testing policy for the whole office and now you’re sweating.

Or maybe you’re on the job hunt and worried that your [perhaps perfectly legal] lifestyle may clash with that pesky pre-employment drug test that certain potential employers warn you of when applying.

Regardless of the reason, you’re likely sitting there wondering how to pass a drug test.

Don’t worry, we know that feeling. No one likes being faced with a drug test.

Failing a drug test can lead to a number of extreme consequences depending on your situation.

Weed is legal, right?!

scientist checking marijuana plants

What’s crazy is you can now fail a drug test for a legal substance depending on the state you live. With the recent wave of cannabis legalization across the United States and in Canada, more people are consuming marijuana than ever before. And.. many of them are doing it legally.

Marijuana is now fully, [recreationally] legal in 10 U.S. States, and you can consume cannabis for medical use in 33 U.S. States. [1]

Yet, you can still be heavily penalized if you fail a drug test.

For example, some jobs still require a drug test by the federal government, even in states where marijuana is legal. So even if you legally consume marijuana, you can still lose your job over a failed drug test.

That’s why we’re here..

Our guide will give you the essential knowledge to cleanse your body of unwanted toxins to help you in preparation for your upcoming drug test.

How to Pass a Drug Test for Weed

First, before reading any further, take a deep breath. We’re going to walk you through this process and explain what to expect in the days or weeks leading up to your test, along with what to do come test day.

At the end, based on your answers we’ll show you the recommended ways to cleanse your system.

There are a lot of factors in this process, so following simple steps and instructions will give you the best chance to meet your deadline. Many people deviate from the process to try their own tactics. And many, unfortunately end up failing their test.

Stick to the plan below and you may be able to beat your upcoming drug test.

First, we’re going to guide you on how to gauge your current THC ‘toxicity’ level and determine what proper steps you should take to meet your deadline and pass your test.

Step 1: Determine Your Current THC Level

Everyone always wonders how long does it take to pass a drug test. It truly depends on your situation and the various factors. We start with figuring out a good estimate for current [testable] THC level.

What do I mean by testable THC?

Basically, when screening for THC, particularly in urine tests, it is a specific metabolite, or byproduct, of THC metabolism called carboxy-THC.

So, since we’re dealing with metabolism, there are a slew of highly specific variables that will vary widely from person to person.

Luckily, there are a few factors which can be relied upon fairly well to give a ballpark estimate of your current carboxy THC levels: BMI, body fat %, frequency of use, and, of course, the time since you last consumed cannabis.

BMI and Body Fat

bmi chart

First consider your BMI and body fat percentage. And be honest, because THC actually binds to your fat cells that’s what causes most people to fail a drug test.

Since THC is fat soluble, it gets stored in adipose tissue. Basically, those with high BMI likely have larger fat stores, and thus a higher level of THC in their system.

This isn’t necessarily the case, so having at least and estimate of your body fat percentage should sharpen your ballpark values for current THC levels. The easiest way to achieve this is through some sort of visual reference, just keep in mind that these are estimates.

Type of Use

So, how long can they detect THC metabolites in your system? Well it depends on the route of ingestion, consumption patterns, and other variables.

For example, if you’re vaping concentrates, or dabbing as the modern stoners are calling it, that timetable of 7+ days to rid of testable THC metabolites gets extended.

Why does it take longer to detox from concentrates or dabs?

Well, let’s think about this for a second, what product of cannabis remains in your system and is tested for when you’re facing a drug test? THC metabolites right?

So then, if you’re consuming concentrated cannabis, then you’re consuming much higher levels of THC than one who smokes or vapes cannabis flower.

Basically, consuming more THC per dose will mean higher THC metabolite levels in your system. And as a natural and functional byproduct, you’ll need a longer or more rigorous detox period to pass a drug test.

Frequency of Use

Next you need to consider how often you consume marijuana.

One joint a week will lead to a lower THC level than smoking bong hits every day. You also have to note if you are smoking cannabis concentrates or eating edibles your THC levels can be higher overall and thus testable for longer than your typical joint toker.


Finally, you need to account for the amount of time since your last cannabis consumption. The more time away from THC the better.

Step 2: Determine What Type of Drug Test

The next step is to identify which type of drug test you will be taking. Different types of drug tests will require unique steps to get a clean result.

A majority of people will be administered a urine drug test. Mouth swab tests are also becoming more common.

Here is a quick THC Drug Test reference table for the possible tests, what they test for, and their timetable for effectiveness.

Type of Drug Test THC Metabolite Tested Testable Time**
Urine Non-psychoactive carboxy-THC 7-10 days
Hair Non-psychoactive carboxy-THC 90+ days
Mouth Swab Both activated delta-9-THC as well as carboxy-THC* 7-10 days
Blood Both activated delta-9-THC as well as carboxy-THC* 7-10 days

*When it comes to blood and saliva swab tests, they usually aren’t screening for the non-psychoactive carboxy-THC. Instead, they’re testing for the activated, delta-9-THC.

**This is based off average values for the occasional or one-time cannabis consumer.

Step 3: Determine Your Detox Deadline

So, when is your drug test?

Now, of course this may seem self-explanatory, especially considering you’ve probably been thinking about the date ad nauseum ever since you found out, but this is, arguably, the most crucial factor for the whole process to be successful.

You need to determine how long you have to detox and meet your deadline. Some people might know well ahead that they are going to be looking for a new job and can start a natural detox process immediately. Others know they have a week until their test and are just now pausing their use. The unlucky ones get a drug test sprung on them at the last minute.

What is the Best Way to Pass a Drug Test on Short Notice

We know how that goes. The surprise drug test that gives you nightmares of all the pop quizzes you got in school.

Sometimes you don’t have the luxury of letting your body cleanse before your deadline. This is when many people resort to foolish, risky, and sometimes illegal methods to pass their drug test.

We encourage you to be cautious when considering these options.

You don’t want to get caught with a bad of fake pee popping on your crotch or the moderator finding your fake appendage.

Certain products like detox drinks are sold that can help your body flush the immediate toxins and provide you with a window for clean urine.

Your Personal Detox Calculator

Let us help you pick the choose the best detox kit depending on your deadline. Based on the following information, we’ll send you straight to the recommended approach to help you pass your test. And don’t forget to check your email for a special surprise from Pass A Drug Test.

Everyone Wants to Know.. What is the Best Detox Drink to Pass a Drug Test?

When you’re faced with a drug test on short notice, you’re desperate and wondering is there anything I can drink to pass a drug test. But again, you need to make sure the product you’re using aligns with the natural detox process.

Detox drinks should have natural ingredients that help your body purge itself of toxins in short order.

Key Ingredient: Riboflavin

One ingredient which plays a central role in drug metabolism (and really metabolism in general) is riboflavin, or vitamin B2.

The importance of riboflavin to the body’s metabolic processes cannot be overstated. It’s an integral process for energy production, as a precursor to the enzyme flavin adenine dinucleotide, or FAD, which is part of the electron transport chain.

FAD, in conjunction with cytochrome P-450 (also participates in drug metabolism), makes a wonderful ingredient of this detox program.

Key Ingredient: B12

Another integral B vitamin is vitamin B12. It is important for the processes of detoxification, due to methylation, (or the adding of a single carbon atom plus three hydrogens). This methylation of THC helps change it to a water-soluble form that can be more easily processed and excreted… and this is what we’re looking for isn’t it?!  

Key Ingredient: Turmeric

Turmeric, or curcuma longa to use its latin name, has anti-inflammatory properties and an observed high antioxidant activity from its active component, circumin, adding even more strength to the detox process. It’s a key part in this successful cleanse!

Ultimately, when fortified with these supplements, you should have the tools to help you pass your drug test and pass it safely!




Does CBD Show Up on a Drug Test?

The only way that CBD would show up on a drug test is if the test was designed to screen for CBD in particular.

So then you’re probably asking, do employers test for CBD in drug tests for employment?

There’s really no incentive for employers to test for CBD because of the fact that it isn’t psychoactive like its cannabinoid friend THC.

Without any psychoactive effects, or “high”, your consumption of CBD poses no potential risk to the roles of the job, (neither does your off-the-job THC consumption, but that’s a discussion for another time).

So, if they aren’t screening for CBD in typical drug tests, then there’s nothing to worry about, right?

Wait, what about the full spectrum CBD, since it can often contain trace amounts of THC?

Can you fail a drug test due to CBD?

Since most CBD products that have some presence of THC have it in such trace amounts, you’d have to be consuming over 2 grams of CBD per day for the THC to be at testable levels in your urine.

So don’t fret, use that CBD oil and appreciate the many fruits of the cannabis plant.

How to Pass a Urine Drug Test


lab testing urine

A urine drug test is the most common form of drug test administered, with over 50 million urine drug tests given each year. Additionally, THC is the most common illegal drug found on urine tests.

What you need to know about Urine Test

Urine drug tests require you to urinate in a sterile cup, which will be taken and sampled by a lab worker for a specific list of drugs. In particular, these urine tests are, as we discussed earlier, screening for a very specific byproduct of the metabolism of THC, the non-psychoactive carboxy-THC.

Let’s step that back for a second and turn our focus to that defining word metabolism.

So, then how long does THC stay in your system?

The process of [THC] metabolism is highly specific to the individual and a whole slew of variables, for a more in-depth discussion, check this out.

Start with the Natural Detox Cleanse

5 day nutra cleanse to help your detox process

Putting it all together, the general rule of thumb is that if you are planning ahead weeks in advance, you can let your body detox through a series of healthy lifestyle behaviors.

Nutra Cleanse products on PassYourTest.com help speed up your body’s natural detox process and can help you meet your personal detox deadline. Remember, the key is flushing the THC metabolites from your system.

The best way to start approaching your drug test is with the best natural cleansing methods for your body. Through healthy behaviors, you can effectively detox from THC. The first step is obviously pausing your cannabis consumption.


Drink Fluids

healthy detox water and fluids

The detox process will not be effective if you don’t take in enough fluids. You need to drink plenty of water to flush the THC from your body. Not enough water or fluids will stall the detox process.

I think this is an opportunity to make a very important distinction: ‘detoxing’ is a process that we have devoted organs for which have developed with efficiency in mind of millions of years of biological evolution.

One such organ system are the kidneys, which serve the purpose of filtering our blood at rate of about 150 quarts per day. Anything that is vital such as proteins, minerals, and nutrients are returned to the blood, along with a majority of the water involved in the filtration process.

Okay, but what does this have to do with how to detox from weed?

Well… The water that isn’t reabsorbed during the kidneys’ filtration of the blood provides the medium for the excretion of waste metabolites such as, oh, I don’t know, carboxy-THC.

So, drink lots of fluids, preferably water as the main one. And drinking lemon juice or sipping on antioxidant-rich tea along with water will help naturally rid your body of wastes from all your metabolic processes, including that pesky carboxy-THC.

Eat Lean

What you eat will directly interact with how quickly your body detoxes. Some foods slow down the detox process and some foods will speed it up.

When it comes to drug metabolism and modulating the effectiveness of the body’s natural detoxification processes, we’re talking about modulating certain enzymes that catalyze integral chemical reactions that aid in excretion of toxins.One such family of enzymes that are of particular interest in drug metabolism is known as cytochrome P450, or CPY450.

“Specifically, the function of CYP450 enzymes is to add a reactive group such as a hydroxyl, carboxyl, or an amino group through oxidation, reduction, and/or hydrolysis reactions”, [4].

Since we’re looking to aid in the metabolism of THC, which involves the creation of carboxy-THC, (or the adding a carboxyl group to THC) in order to create an excretable waste metabolite, it behoves us to support maximum functionality of the CYP450 enzymes.

A review of clinical studies on the modulation effects of foods on natural detoxification processes, examining the effects upon a number of these detox-required enzymes, reported a list of foods which have been studied clinically to support detoxification. [4]

Exercise & Sweat

male exercising at the gym

Exercise is the best way to induce sweat, mobilize stored fat for energy, and thus flush the THC toxins before your drug test. Make sure to do regular cardio exercise that gets your heart pumping with the fat burning zone.

The more you sweat (within this fat burning zone), the more your metabolism is working and eliminating THC from your fat cells.

You should also consider spending time in an infrared sauna or hot bath to continue sweating out THC and warming the body from within, which, again, serves to mobilize stored fat cells for energy production.

Worth noting, you should only exercise up to the day before a urine test. On the actual day of your test, no exercise. The best bet is to relax and trust the process.

Rest & Relaxation

A body that is stressed and tired does not detox as quickly as a body that is relaxed and well rested. Your body does a lot of natural detoxification while you sleep, and your body functions better during waking hours so detox happens more efficiently. Make sure you get ample sleep during the days before your test.

So, this is all well and good, provided you have the time for a natural detoxification. The fact of the matter though is that is often not the case.

You very well might be sitting there wondering…

How to Pass a Urine Drug Test in 24 Hours

This, like most everything we’ve discussed and as it goes with any process mediated by metabolism is filled with complexity and dependent upon all sorts of variables, from your genetics to BMI, frequency and type of use, to the detox timetable you’re working with.

So how do you pass a urine drug test in 24 hours?

Basically, if you’re in this scenario, you are going to need supplementation and a rigorous fluid intake protocol to create a rapid flush.

Luckily, there are quite a few products available which can  be used for same-day cleansing. Fortified with ingredients like those listed above.

But perhaps you’re in a bit of a, um, hairier situation and you’re wondering about how to pass the drug tests that don’t use urine as the testing medium.

How to Pass a Hair Drug Test

This is an interesting scenario, usually hair follicle tests are used to establish a pattern of drug use over the past 90 days. This 90-day window is usually because the hair samples are taken from just near root to about an inch and a half in length and since hair grows at about an average rate of a half inch per month, this equates to, you guessed it, 90 days!

Well 90 days is kind of a long time and if you had that kind of time before your test, you likely would’ve stopped reading long ago. The most likely is you want the answer to…

How to Pass a Hair Drug Test in 24 Hours

Um, shave or wax every single hair off of your body! A little extreme? Yes, of course it is, not to mention the awkwardness of suddenly showing up to your new job like a slick fish out of water.

So what then are you to do?

Well, there are some shampoo and conditioner products on the market which serve the very purpose of stripping hair of these unwanted toxins so that you can pass the test.

How to Pass a Mouth Swab Drug Test

The mouth swab tests, because of their cost-effectiveness, have become more popular in recent years. These tests have the ability to test for both the non-psychoactive carboxy-THC as well as the psychoactive activated delta-9-THC. Usually though, they are used to test for the activated delta-9-THC, which, as you now know, isn’t the long storage metabolite of THC.

This means that it stays in your system for a much shorter time than the fat-stored carboxy-THC. Basically, provided it’s a delta-9 mouth swab drug test, then, as long as you don’t consume cannabis within 48-72 hours of the test, you should be in the clear.

How to Pass a Saliva Drug Test

This is the same as the mouth swab test, the cheek swab will provide enough salival material to be tested, there’s no need for an entirely different, just saliva sample type test.

Can I Pass a Saliva Drug Test with Listerine?


Listerine is not designed to break down drug metabolites or mask them in any way.

If you’re trying to have listerine in your mouth whilst getting swabbed, the most it could do is maybe, and I mean a strong maybe, make the results of the test inconclusive, this would just mean another test scheduled for a later date.

How to Pass a Drug Test with Home Remedies?

I feel like we addressed this concept with the natural detox process, but let’s go through this quickly for good measure. If you search home remedies for passing a drug test, there is no limit to the ridiculous suggestions you will find…

Can I Pass a Drug Test with Baking Soda?

No, this is just downright silly if the suggestion is to add it to the urine sample, you’ll just make the results inconclusive, maybe, and the reaction of the alkaline baking soda with acidic urine would most likely tip-off any testing facility workers that handle your sample.

Will Apple Cider Vinegar Help Pass a Drug Test?

While ACV is good for digestion, it alone likely won’t be able to help you pass your drug test, but you’re now a damn near bonafide expert on the topic of drug metabolism processes, so you know that passing a drug test takes a concerted effort of determining current THC levels, your body composition, and following a proper diet and exercise regimen.

If you’re thinking of adding vinegar to the urine sample, we both know that’s not going to work, come on, you’re better than that, remember?!

Is Cranberry Juice Good for a Drug Test?

Yes, cranberry juice NOT from concentrate is a good tool to help you pass a drug test. This is because cranberries contain a lot of beneficial nutrients such as the B vitamins riboflavin, niacon, thiamin, and vitamin B6. Remember these? We discussed earlier (insert link that goes back to the key ingredients section of article), how integral these nutrients are to the body’s detoxification process.

They are also known as a good source of vitamins C and E, as well as a decent source of fiber. So, the answer is yes, 100% cranberry juice is a good tool to help you pass a drug test, but it shouldn’t be the only thing you rely on. Integrate 100% cranberry juice into your detox regimen of abstinence, healthy diet, exercise, and good sleep hygiene and you’ll have another weapon in the arsenal to conquer your drug test!

Does Zinc Help Pass a Drug Test?

Yes… supposedly.

According to a study published in Journal of Analytical Toxicology in 2011, zinc sulfate was added to urine samples of subjects after they smoked cannabis and was found to interfere with ELISA urinalysis of carboxy-THC.

Zinc supplements reportedly also demonstrated interference when subjects ingested 200mg after smoking cannabis, but this is shaky as the amount to interfere with the ELISA was reported by a later study to be 5,000 times higher than normal urine concentrations of zinc and thus easily detectable.

I’d say that supplementing with zinc, just like cranberry juice, may be an acceptable tool to add to your arsenal for passing a drug test, but since the jury isn’t out on its effectiveness, I wouldn’t rely solely on this method.

Should you Use Certo to Pass your Drug Test?

The Certo or Sure Jell method has been around as a go-to ‘DIY’ method for ages. The idea is that, since Certo and Sure Jell are fruit pectin and chock full of fiber, that you’ll protect yourself from excreting any THC metabolites into your urine.


Well the pectin serves to inhibit the carboxy-THC from becoming water soluble by binding to bile and forcing the fat-soluble carboxy-THC to be excreted the only way pectin can, via the stool. Then, as with any detox method, drink a lot of water, like a gallon within a couple hours!! This will obviously dilute the urine, so perhaps not the best method.

Can I Use Niacin to Pass a Drug Test?

The niacin flush method is another method that has been around for a long time. It can be done correctly by properly spacing out the doses over a period of nearly five days. The reason for the spacing out of no more than 500 mg doses is because niacin puts a decent amount of stress on the liver and having too much at once can pose a serious health risk.

So this is definitely not a short notice option, you’d likely just cause yourself sickness and pain if you were to use this method for a same day cleanse.