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How To Flush THC Out Of Your System

Let’s be honest here, drug testing is not a fun thing especially if you’re a regular cannabis user. Unfortunately, this ritual is becoming increasingly popular especially in professional settings as it’s the only way to determine whether or not you’re fit to suit a particular job position.

Thankfully, with our team of experts, we’ve managed to gather helpful information that will really help you to flush out THC from your system to make you pass an upcoming marijuana drug test.

  1. How do drug tests work?
  2. How long does THC stay in your system?
  3. Does hyperhydration help in THC withdrawal?
  4. Can flushing out your system help you pass a drug test?
  5. How much water do you have to drink?
  6. How can diuretics help?
  7. How to mask diluted urine?
  8. Does niacin flush out THC?
  9. What is the fastest way to flush out THC?

flush out THC

How do drug tests work?

Before we can proceed with our main agenda, lets first take some time to understand how exactly drug tests work. Now, there are three main drug test procedures that are commonly used to detect traces of THC in your body.

These tests include urine tests, hair follicle tests and saliva/oral tests. Although all these tests are perfect, urine test or rather urinalysis is the most common drug test that’s used by the vast majority of employers to detect traces of THC in your body.

Drug tests usually work by searching for traces of THC metabolites. These metabolites are generally small tiny products that are usually left behind after THC has entirely been processed by your body. One of the main metabolites is THC-COOH which is mostly stored in the fatty tissues.

Now, to determine whether you’ve passed a marijuana drug test, THC-COOH in your urine sample should not pass the threshold of 50 ng/ml.

How long does THC stay in your system?

There are many factors that determine how long THC metabolites can stay in your system. These factors include:

  • Frequency of use: here, the more THC you consume, the more the metabolites will accrue in your body’s fatty tissues.
  • Body metabolism: just like how our bodies metabolize food at different rates, the same happens to THC.
  • Body fat level: as we mentioned earlier, THC and its metabolites (THC-COOH) are stored in the fatty cells within the body. As a result, the higher the fat levels in your body, the more the THC-COOH will be inevitably stored in your body.
  • What you consume: finally, what you consume (flowers vs concentrates) will greatly influence how long THC and its metabolites will stay in your body.

As we finalize this section, let me mention that THC metabolites have a half-life of 7 days meaning in every 7 days, THC-COOH in your system is decreased by 50%. If you do the math, you’ll discover that it will take approximately 3 to 4 weeks to entirely flush out THC and its metabolites from your body.

Does hyperhydration help in THC withdrawal?

Most people have been asking whether it’s possible to flush out THC and its metabolites from your system by drinking a lot of water (commonly referred to as hyperhydration). Although there’s a huge controversy on whether hyperhydration really works, this section will try to combine some complex pharmacology knowledge to see whether we can arrive at a genuine answer.

The kidney is a body organ that removes toxins and drug metabolites from the blood by the method of renal excretion. To achieve this, your kidneys combine four major processes which are filtration, reabsorption, secretion and excretion.

According to several studies, drinking a lot of water will have less if not any effect on the filtration rate. By drinking more water, the rate of reabsorption will generally be reduced thus increasing the rate of renal excretion of certain drugs.

Since THC and THC-COOH undergo the reabsorption process, it’s likely that drinking excessive amounts of water (also referred to as hyperhydration) will help to increase the elimination process. Now, having studied the entire elimination system, we know that renal excretion is less than 1% of the entire elimination cycle meaning there are other pathways THC and its metabolites will undergo to be entirely eliminated from the body.

Now, since hyperhydration increases renal excretion by about 30%, it’s fair to mention that this process is not likely to have a major significance in eliminating THC and its metabolites from the body.

Can flushing out your system help you pass a drug test?

In most cases, drug tests come by surprise. Although abstaining from cannabis for at least a month will sound to be the safest way out, other options such as flushing out THC from your system might seem to be the only option especially if the drug test procedure came by surprise.

Now, most government and private institutions prefer urine tests to detect for traces of drugs due to its efficiency. With this in mind, one of the most effective ways of passing urine drug test is by trying to dilute your urine to see whether your THC content will go below the 50ng/ml threshold.

So, to dilute your urine, you need to consume excessive amounts of water one day before and few hours before the scheduled test. Although this technique will seem to work, there are several downsides you need to be aware of. First, your urine will have a clear color (which will raise questions) and secondly, you’ll have a lower concentration of creatinine (a byproduct of muscle metabolism).

To avoid arousing any suspicion, consider taking B vitamins and creatine tablets to boost the level of creatinine in your system.

How much water do you have to drink?

Although drinking water will not entirely eliminate THC and its metabolites from your body, it will at least help to dilute your urine to test below the recommended threshold of 50 ng/ml. Speaking of the amount of water you’re supposed to consume, it’s recommended that you consume about 70-100 ounces (2-3 liters) of water throughout the day before the scheduled test and a further 30-60 ounces (1-2 liters) of water a few hours before the test.

How can diuretics help?

Diuretics aid the body in getting rid of excess fluids. They work by stimulating the kidneys to make them excrete and flush out more sodium and water from the body in the form of urine. In most cases, diuretics are prescribed by doctors to cater for conditions whereby the body is discovered to retain too much fluid.

Among these conditions include; high blood pressure, congestive heart failure, kidney dysfunction, tissue swelling, diabetes and cirrhosis among others.

Now, how can diuretics aid in flushing out THC and its metabolites from the body? In case you’re left in a situation whereby there’s only a little time left to save yourself, diuretics can really help as they can make you urinate a lot and clean out your system before a drug test.

Although diuretics don’t really flush out all the THC and its metabolites from your system, it does a superb job of reducing the high concentration of THC allowing you to pass the cutline threshold of 50 ng/ml.

Some of the natural diuretics you can consider include; coffee, green and black teas, parsley, hibiscus, grapes and berries, horsetail and hawthorn among others. On the other hand, among the medicinal diuretics you might consider include: Bumex, Edecrin, Lasix and Demadex among others.

How to mask diluted urine?

Just like we mentioned earlier, you don’t have to be 100% free from THC to pass a urinalysis drug test. Provided the THC levels are below the recommended threshold of 50ng/ml, then you don’t have to worry about anything.

Drinking a lot of water before a scheduled urine drug test can help you test negative for THC. However, there are some major drawbacks you need to be aware of that can really raise the eyebrows of those conducting the test. First, your urine will have a clear abnormal color and second, your creatinine concentration will be lower than normal.

To avoid raising the red flags or rather arousing suspicion to the testing labs, there are additional steps you need to take.

Vitamin B

The first step you need to take is to find an effective way of turning your urine yellow. This is best achieved by taking Vitamin B most preferably Vitamin B2 and Vitamin B12. Simply visit your local drug store and take a dosage around 50-100mg just a few hours before the test.


This is a byproduct of muscle metabolism. Produced by the body naturally, creatinine is a waste product that can easily determine whether your urine is diluted or not. To dodge a urine drug test without being suspected, simply buy creatine supplements from any drug store and take the drugs several hours before the drug test.

Since creatine has a half-life of 3 hours, you don’t have to take the supplements a day or so before the test.

Does niacin flush out THC?

Is it safe to use niacin to flush out THC and pass an upcoming urine drug test? This is one question most desperate cannabis users have been asking when getting ready for an upcoming drug test. Also referred to as nicotinic acid and “Vitamin B3”, niacin is a colorless, hydrophilic organic compound that’s naturally found in various foods.

This dietary supplement is legal and is sold in most drug stores as a treatment for lowering bad cholesterol and raising good cholesterol. Now, there are two ways most people claim niacin can help to flush out THC from the body.

The first claim is that niacin speeds up the breakdown of fats. When body fats are broken down, THC and its metabolites are released and flushed out of the body. This claim is false as niacin is not mentioned anywhere as a supplement used in weight loss.

The second claim is that niacin aids in opening the blood vessels to release THC and its metabolites. This again is false as niacin doesn’t have any effects on the blood pressure in healthy people. Again, taking niacin only causes vasodilation in the skin and not in the fat tissues.

With that said it’s fair to mention that niacin won’t help you pass a urine drug test. In fact, some studies have claimed that taking an overdose of niacin can still result in a failed drug test. Instead of consuming niacin to flush out THC and its metabolites, it’s better to think of other THC detox methods such as taking diuretics and detox supplements.

What is the fastest way to flush out THC?

Although we’ve mentioned ways you can rely on when readying yourself for a scheduled urine drug test, in case you’re panicking and you feel like you might fail the test, one product that can really help you flush out THC fast enough is the Fast Marijuana Detox Kit.

Intended for users with a body weight of over 200 lbs, this detox kit features a one 20oz bottle with Super Boost tabs, one pack of chewable supplements and one home kit device for testing for THC. For effective results, drink 20oz of clean water two hours before the test.

Wait for a further 20 minutes before drinking the entire QCarbo Detox Drink in the bottle. After another 20 minutes, refill the bottle with drinking water, shake the content well and drink the content once more. You will urinate several times. Use the available testing kit device to monitor the THC content in your system.

In case the results are positive, simply execute the next step which is chewing the QChew tablets. Again drink a lot of water about 30oz then wait for one more hour to urinate.