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Smoked 10 days ago, for how many days will saliva test be positive?

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How far back can salvia test go on drugs I smoked 10 days ago my drug test was on the 10 day I had to chew on a cotton ball for 3 minutes.

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Category: Family Physician-GP
Dr. John Monheit is online now

Expert:  Dr. John Monheit replied 4 Days.


It is unlikely to show up on the saliva drug test after 10 days but it depends on the drug.

Saliva drug test used usually in pre employment uses a band stick which detects the presence of minute amount of alcohol.

It detects a variety of commonly used drugs of abuse. The corresponding drug band lights up for a particular drug.

Here are the common lag time between the use of drug and detection of the drug on test.

Alcohol 1 Day
Opiates - 3 days.
Cocaine - 1 day.

Cannabis - one day.

These drugs can remain in the hair follicle up to 4 weeks.

Thank you.

Dr. John Monheit
Category: Family Physician-GP
Residecny: North Colorado Family Medicine
Medical School: The Chicago Medical Center
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