Will I Pass a Drug Test if I Was Smoking Weed a Week Ago?

Nowadays, most companies in the United States require their employees to get a drug test. Unfortunately, it could be the worst day of all if you have to undergo such a test the next day after chuffing in some weed.

Keep reading this article to know why you must undergo a drug screening, whether you will pass the test or not, and finally learn about how much time that marijuana stays in your body.

The main reason why employees need to go under a drug screening could be because of Ronald Wilson Reagan, the 40th president of the United States that served in the White House from 1981 to 1989. Reagan signed a managerial order in 1986 which obliged federal staff and various entrepreneurs to undergo drug testing.

Thereafter, many American companies joined this movement and began mass testing their employees. By 1996, more than 79% of the employers carried out drug testing for their staff.

How Does the Body Process Cannabis?

To begin with, if you’ve got a strong metabolism that can process cannabis quickly enough, then you might be in luck and pass the test. That said, you wouldn’t really want to take the risk, right?

How quickly marijuana leaves your system is also influenced by your lifestyle. People are more likely to pass a drug test if they constantly eat good food, work out frequently, and have low body fat.

Why is that you may ask? Well, it is because cannabis traces in the blood system are lipid-soluble and are contained in the fat cells of your body.

Whereas, if you have a high amount of body fat, your body retains more marijuana than when you are skinny. So, the difference in physique, metabolic rate, and shape of each person are all important factors that can affect a drug test result.

Additional Factors Determining How Long the Drug Remains in the Body

The way you consume weed: drug levels in your body could decrease within 2 days of smoking marijuana. However, if you take edibles, the drug level may be detectable for longer because the chemical compounds are broken down very slowly.

Power: a potent weed with a high % of THC (30% and over) will last in the blood system for a longer time than a 15-21% mid-stretch strain of herb.

Frequency: In case you normally smoke weed on a daily basis, it will take longer to get rid of the drug in your blood system.

Other Substances: The speed of removing THC (delta-9-tetrahydrocannabinol ) can be affected by other specific drugs. Indeed, verapamil and ketoconazole, for example, can make drug levels in your bloodstream increase.

Will I pass a drug test if I was smoking weed a week ago?

How Long Does Marijuana Stay in Your Body?

Below you will find the different tests and their respective description:

Tests of Hair

Many users despise this test since a hair follicle test can tell if one has used marijuana in the past 90 days! Upon the usage of weed, small blood vessels reach the follicles of the hair and remain for quite a while, making this test the most difficult one to pass. Since hair generally increases by 0.5 inches a month and testers take up to 1.5 inches of samples, your use is detectable for up to three months.

Tests of Urine

Most drug tests include measuring a person’s urine. When using this type of test, the detection window is different depending on a variety of factors. Here are the timeframes provided by Mayo Clinic Proceedings in their thorough study.

  • 3 days for casual use (maximum of 3 times per week or for a person who smokes for the first time too)
  • 5-7 days for common use (3-4 times a week).
  • 10-15 days if you’re a moderate user (almost every day).
  • 30+ days for heavy users (multiple times a day).

Tests of Saliva

Normally, cannabis infiltrates saliva while you’re smoking. If you are an occasional user, your THC is no longer detectable within 3 days. However, heavy users can have THC in their system for up to 28 days.

Tests of Blood

With this test, it is possible to detect weed traces of heavy users even after 25 days! On the other hand, it is normally undetectable after 3 days. If you used Marijuana more than a week ago, you are likely to receive a negative test result. Unfortunately for cannabis users, there are only a few companies that only use blood tests, as they know about its low effectiveness.

I Was Smoking Weed One Week Ago. Will I Pass the Drug Test?

If you are an occasional or a first-time weed smoker, you have a good chance of passing the test one week after your last use. However, do bear in mind the different factors we discussed earlier. For regular users, their chances of failing are higher, especially if they have been using cannabis for a long time.

And there you go! That’s all you have to know about passing a drug test one week after your last weed consumption. In conclusion, we strongly recommend planning in advance and reducing (or eliminating) the amount of weed you smoke as soon as you get a new job.