Laced Weed – Detection and Side Effects


Learning if you have laced weed is essential if you don’t want to smoke it. Laced weed is rare because it takes away from profits and makes enemies. It’s more likely that you are smoking moldy weed.

Weed is most commonly laced with coke, PCP, meth, and heroin. If weed is laced, it’s probably intended to be consumed by the person who did the lacing. Dealers may sell laced weed at a higher price as a “wet” or an “amp” joint.

Testing for Laced Weed

Using a drug test is the best way to test for weed laced with coke, PCP, meth, heroin, acid, ketamine, ecstasy, or even formaldehyde. Residue drug tests are made to detect the presence of drugs within seconds and can be bought cheaply on Amazon. If you’ve already tried the weed in question you may be able to use a urine drug test but the results won’t be as accurate. Using a residue drug test as a urine drug test, or vice versa, won’t work because chemicals are changed when they are metabolized by your body.

Related Tutorial: How to Pass a Drug Test

Look, Taste, and Smell

Your cannabis should look green and smell pungent. When it’s laced with another drug it can smell like harsh chemicals and can have a burning sensation when you inhale. If you shake a bud, not many crystals should fall off, a little is alright as those are probably trichomes. Trichomes are brown to clear in color. Blue or white crystals and the weed is probably laced. In order to get a close look of the weed, I like to use a 420 scope.

Jump to: coke, PCP, heroin, acid, formaldehyde, glass, or laundry detergent.

Weed Laced With Coke

Cocaine Laced Weed

Because of cocaine’s availability, coke laced weed is probably the most popular form of laced weed. Coke is the white powdered form of cocaine and is normally smoked, snorted, or ingested. The texture is close to powdered sugar.

Cocaine smells like ether, gasoline, or the chemical that used to extract the freebase from the mash. This smell can sometimes even be mistaken for weed.

Imagine putting a Tylenol in your mouth and chewing it. This is close to what coke tastes like. It’s a little metallic, bitter, and chemical like taste. However, when smoking or ingesting it, the numbness it causes may make it difficult to taste.


Smoking cocaine laced weed is dangerous because it puts stress on your lungs, heart, and brain. Your muscles tense and your heart will beat faster from constricted blood vessels which can result in a heart attack, stroke or even cardiac arrest.

  • Numbness
  • Unable to fall asleep
  • Increased energy
  • Trouble concentrating
  • Paranoia and compulsive behavior

Glass Laced Weed

Laced Cannabis - GlassCrushed glass can be added to weed to make it weigh more, make it look like there are more trichomes than there actually are, or may have gotten there by accident from improperly storing it or shattered grow lights.

Testing for Glass Laced Weed

A good way to test if your weed is laced with glass is to use a CD. Weed, on its own, will not scratch a CD easily. All you have to do is to gently rub a bud on a CD and if it gets scratched your weed is probably laced. Although, if your weed is dry it may still scratch CD.

Weed Laced With PCP

Phencyclidine, aka PCP or angel dust, can be found in the form of white powder or crystals, capsules, tablets, or liquid. Developed in the 1950s as an intravenous anesthetic, PCP was soon discontinued due to its side effects. PCP has a distinctive bitter chemical taste and can range in color from tan to brown.

PCP Laced Weed


In small amounts, it can make you feel detached, distant, and estranged from your surroundings. Friends may notice you staring blankly and blinking often. Smoking PCP laced weed can also cause:

  • hallucinations
  • impaired coordination
  • numbness of the extremities
  • slurred speech
  • aggressive or violent behavior
  • a sense of strength and invulnerability
  • disorientation
  • paranoia
  • seizures
  • coma
  • death

Weed Laced With Acid / LSDLSD and Weed

Smoking weed laced with LSD or acid in a pipe won’t cause you start hallucinating or any other effects. This is because it gets destroyed when it gets too hot. However, if you buy pre-rolled joints or blunts the tip may have LSD or acid on it and when you put it in your mouth it will be absorbed into your system.


  • Hallucinations
  • Impaired Coordination

Weed Laced With Heroin

Heroin can be a white or brown powder, or a black sticky substance known as black tar heroin. It tastes bitter and smells vinegar or rubber.


  • Surge of euphoria
  • Constricted pupils
  • Slowed Breathing
  • Flush Skin
  • Itching
  • Nausea

Weed Laced With Embalming Fluid / Formaldehyde

Embalming FluidEmbalming fluid contains formaldehyde which is known to cause cancer. Cannabis may be soaked in formaldehyde in order to make it seem stronger that is actually is but is very dangerous. By itself, formaldehyde is colorless and smells somewhat like pickles.


Similar effects to smoking PCP laced weed.

  • Bad headaches
  • Increased heart rate
  • chest pain
  • dry mouth and throat
  • nausea
  • diarrhea
  • severe paranoia
  • hallucinations
  • death

Laundry Detergent Laced WeedPowdered Laundry Detergent

A dealer may coat your buds in powdered laundry detergent in order to make it look like there’s a lot of crystals and to make it smell fresh.

If you smoke weed laced with laundry detergent you’ll taste the chemicals in the soap along with the fragrance.


  • Soar throat
  • Nausea
  • Trouble breathing

Testing for Laundry Detergent

Testing for laundry detergent is very easy. First, find a small watertight container and put some water in it along with some of the weed in question. Next, simply shake the container and look for suds of soap.

Rules To Prevent Purchasing Laced Weed

  • Never buy weed already ground up
  • Only buy from a reputable dealer
  • When in doubt, throw it out
  • Trust your instincts
  • It’s ALWAYS better to be safe than sorry

Now that you know how to detect laced weed, please spread this knowledge and share this guide and you might save a life.


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