Study Finds Consumers of CBD-Rich Cannabis Extracts “Generally Tested Negative for THC in Hair”

According to a new study being published in the journal Forensic Science International, and epublished ahead of print by the National Institute of Health, even after repeated consumption of CBD-rich cannabis extracts consumers “generally tested negative for THC in hair”.

Consume CBD extracts? You probably won’t fail a hair test, according to a new study,

“Medical cannabis is becoming increasingly popular for many different ailments and improvement of general well-being”, begins the study’s abstract. “Particularly CBD-rich extracts are easily available via online pharmacies, health stores or directly from producers. However, almost all of the extracts contain small amounts of THC. In our study, we investigated THC, CBN and CBD in hair samples from regular CBD rich cannabis users. ”

The goals of the study “were to determine levels of the cannabinoids in hair and to evaluate a possible correlation between regular CBD intake and CBD levels in hair.” All participants consumed cannabis extracts from the same producer, which “contained CBD at different concentrations and small amounts of THC with a CBD/THC concentration ratio of 30”.

Read moreStudy Finds Consumers of CBD-Rich Cannabis Extracts “Generally Tested Negative for THC in Hair”

Marijuana Topicals: Consistent Use Will Not Result in Failed Drug Test, Finds Study

The consistent, multi-day use of marijuana topicals at varying THC levels did not result in a negative drug test for any participant of a new study published by the journal Forensic Science International.

Marijuana Topicals
A marijuana topical from Kush Creams.

For the study, researchers used “two commercially produced products topically that contained 1.7ng and 102ng THC per mg, respectively”.

In an experiment; “three volunteers (25, 26 and 34 years) applied both types of salves” every two to four hours over a three day period. The application was “extensive (50-100cm2)”, and each volunteer applied the products “to different parts of the body (neck, arm/leg and also trunk, respectively).”

After the first application blood and urine samples of the participants were taken “every 2-4h until 15h after the last application (overall there was 10 blood tests and 10 urine tests conducted for each participant).”

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Study: Elevated THC Blood Levels Persist for Days in Habitual Cannabis Consumers

By Paul Armentano, NORML

VICTORIA, AUSTRALIAblood — The presence of THC may persist in the blood of habitual cannabis consumers for multiple days at concentrations above 5ng/ml, according clinical data recently published in the journal Forensic Science International.

Australian researchers assessed daily concentrations of THC in the blood of 21 subjects over a period of 7 days of monitored abstinence. Subjects reported having engaging in the “heavy” use of cannabis during the months leading up to the study.

Read moreStudy: Elevated THC Blood Levels Persist for Days in Habitual Cannabis Consumers