How Long Do Mushrooms Stay In Your System? Metabolism And Detection Times


Psilocybin mushrooms, often shortened to “shrooms”, are a type of fungi that contain the psychoactive compounds psilocybin and psilocin. They produce mind-altering effects when consumed. However, mushrooms are quickly metabolized and eliminated from the body. This leads many to wonder, just how long do shrooms stay in your system?

This article will break down how long mushrooms and their metabolites can be detected, the factors that influence this duration, and answer other common questions.

Mushroom Metabolism And Detection Time

Mushroom Metabolism And Detection Tim

On average, the psilocybin and psilocin found in shrooms can be detected in the body for the following timeframes after ingestion:

– Urine: 1-3 days 

– Blood: 6-12 hours

– Hair: up to 90 days 

However, mushrooms and their byproducts have been reported to show up on some drug tests for up to a week in very rare cases, though this is unusual with typical recreational doses.

Factors That Affect Duration In The Body

Several factors impact how quickly you metabolize and excrete magic mushrooms from your system:

Dosage – Higher doses take longer to clear from the body.

Frequency of use – Mushroom compounds accumulate with frequent use.  

Liver/kidney function – Impaired organ function delays elimination.

Body mass – Larger bodies process mushrooms more slowly.

MetabolismFaster metabolisms expedite elimination.

Hydration – Drinking fluids helps flush mushrooms out.

Understanding these factors can help estimate the duration shrooms may show up on a drug screening.

Related: Eating Mushrooms During Pregnancy: Benefits, Risks, And Precautions

Will Mushrooms Show Up On A Drug Test?

Psilocybin mushrooms are not typically included in standard drug screens like a 5-panel or 10-panel test. However, some extended drug tests do screen for psilocybin, especially for situations like probation requirements, mental health programs, custody disputes, or military screening. The most common drug tests that could potentially detect magic mushrooms include:

  • Urine – Mushrooms may show up for 1-3 days or longer with very high doses.
  • Blood – Up to 24 hours if a sensitive assay method is used. 
  • Hair – Mushroom compounds can be detected for months in hair follicles.  

Know the specifics of the drug screening to understand if psilocybin is included before ingesting mushrooms. At-home kits also allow you to test for the presence of mushrooms in your system.


In most cases, psilocybin mushrooms will fully clear from your body within 1-3 days and will not be detected on standard drug tests. However, effects can persist longer with higher doses or frequent use. Knowing the type of drug screening and your individual factors provides insight into how long mushrooms are likely to remain in your system.

More: Shiitake Mushrooms Benefits – Disease-Fighting Powerhouse, Here’s Why


1. How long do mushrooms stay in your urine?

Mushrooms and their metabolites can be detected in urine for 1-3 days on average after moderate consumption. Higher doses may increase the window of detection up to a week in rare cases.

2. Can mushrooms be detected in your hair? 

Yes, psilocin and psilocybin can show up in hair follicles for 1-3 months after ingestion. Hair tests provide the longest detection window.

3. Do all drug tests check for mushrooms?

No, standard 5 or 10-panel drug screens do not test for psilocybin or psilocin. But extended drug panels or those specific to probation/rehab programs might.

4. Can I speed up elimination of shrooms from my body?

Drinking extra fluids, exercising, and sweating may help flush mushrooms from your system slightly faster. But time is the main factor for complete excretion.

5. Will mushrooms show up on a mouth swab drug test?  

No, shrooms do not typically test positive on a saliva drug test given their short 6-12 hour duration in the bloodstream and saliva.

Dr. Jun Ren is a dedicated and experienced registered dietitian and nutritionist who is committed to helping people achieve their health goals through personalized nutrition plans. With a passion for promoting healthy eating habits and preventing chronic diseases, Dr. Ren has been able to assist numerous clients in improving their overall quality of life.

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