How Long Does Weed Stay in Urine? – Redditors Share Their Experiences

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We’ve all heard that weed can stay in your urine for days, weeks, or even months. But how long exactly does weed stay in urine, and what factors affect how long it remains detectable? In this article, we’ll delve into the complex topic of cannabis detection in urine and explore the latest research and insights from Redditors.

How Long Does Weed Stay in Your System? | Urine, Blood, Hair | Leafly

How Many Days Does Weed Stay In Urine Reddit

Factors Affecting Weed Detection in Urine

Several factors can influence how long weed stays in your urine, including:

  • Frequency and amount of use: Regular and heavy users may have higher levels of THC (the active component in weed) in their urine for longer periods.
  • Body fat percentage: THC is fat-soluble, meaning it can accumulate in body fat and be released into urine over time. People with higher body fat percentages may have detectable THC levels for longer.
  • Metabolism: The speed at which your body metabolizes THC affects how quickly it is eliminated from your system.
  • Hydration: Drinking plenty of fluids can help dilute THC levels in urine.

Redditors Share Their Experiences

Redditors have shared a wide range of experiences regarding how long weed stays in their urine. Some report testing positive for THC days after last use, while others test negative within hours. These variations highlight the individuality of cannabis detection.

Positive Tests After Short Time:

  • “I smoked once and tested positive for 5 days.”
  • “I passed a test 4 hours after smoking, but failed 3 days later.”

Negative Tests After Longer Time:

  • “I smoked regularly and still tested negative after 2 weeks.”
  • “I failed after 5 days of heavy use, but passed after 10 days.”

Understanding the Science

When you smoke or ingest weed, THC is absorbed into your bloodstream and metabolized by your liver. Some of the metabolites are excreted in urine, which is why drug tests can detect THC usage. The amount of THC and its metabolites in urine vary based on the factors discussed earlier.

Generally, THC can be detected in urine for:

  • Occasional users: 1-3 days
  • Regular users: 3-10 days
  • Heavy users: 10-30 days or longer

Tips and Expert Advice

  • Hydrate well: Drink plenty of water to dilute THC levels in urine.
  • Exercise regularly: Exercise can help metabolize THC faster.
  • Use a detox drink: Detox drinks may help flush THC from your system, but their effectiveness is questionable.
  • Eat a healthy diet: A balanced diet can support your liver function and aid in THC elimination.

Frequently Asked Questions (FAQs)

  • Can I test positive for THC if I use CBD products? Yes, some CBD products may contain trace amounts of THC, which could lead to a positive test result.
  • How long does weed stay in my hair? Weed can be detected in hair for up to 90 days.
  • Can I substitute someone else’s urine for a drug test? It is highly risky and illegal to substitute urine samples during a drug test.


The length of time weed stays in urine varies greatly depending on individual factors. By understanding the science and following tips from Redditors and experts, you can better navigate the complexities of drug testing and make informed decisions about cannabis use.

Do you have any personal experiences or additional insights about how long weed stays in urine? Share your thoughts in the comments below.

How Many Days Does Weed Stay In Urine Reddit

How Long Does Weed Stay In Your System? [Urine, Blood, Hair]

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