How Long Do Drugs Stay In Your System?

September 30, 2009 by Allan Tan
Filed under: Medicine 
by Allan Tan

People who are going to be tested for drugs often want to know how long do drugs stay in your system. The specific time that a drug stays in someone’s system varies, but there are general timeframes that drugs stay in someone’s system.

The person’s age, weight, and health affect how long drugs stay in your system. The person’s stress level and how much or how often the drug was taken affects how long it is detectable by drug testing.

Psilocybin, known as shrooms or mushrooms, and LSD stay in the system and are detectable by urine tests for about eight hours after use. Drugs that stay in the body an average of two days include methamphetamine, codeine, nicotine, GHB, Ecstasy, heroin, amphetamines, morphine, and opiates.

Hash and marijuana are detectable by urine tests for up to five weeks after use. Benzodiazepines, like Xanax and Valium, can take up to six weeks to completely leave the person’s system.

Alcohol usually stays in the system for six to ten hours. PCP, also known as angel dust, can be in the system for up to eight days. Breathalyzer testing is commonly used by law enforcement to detect alcohol on a person’s breath.

Since a percentage of alcohol consumed is expelled in the breath, this method is accurate and not easily fooled like many myths claim. The only popular myth that has any validity is that mouthwash can affect breathalyzer results. However, mouthwash will raise the alcohol measurement of the breatalyzer test results.

Hair testing is another type of drug test. Most hair tests can indicate which drugs have been consumed in the last ninety days.

Blood tests are another type of drug testing, but they are not often used since they are more expensive. False positives can occur due to some prescription medications.

Prescription medication stays in the system for varying amounts of time depending on the specific medication, dosage, and the individual’s metabolism. The half-life of a prescription drug is used to describe how long it takes for a drug to reach half of the potency of the dosage consumed.

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