• NORML Facebook
  • NORML YouTube
  • NORML Instagram
  • NORML Twitter
  • NORML LinkedIn
Search
NORML

NORML

Working to Reform Marijuana Laws Since 1970

Menu
Skip to content
  • Home
  • Take Action
  • Learn
  • State Laws
  • Chapters
  • Lawyers
  • News
  • Donate

Topic: Drug Testing

a vial of blood labeled "Test: THC" with the "+" box indicating "positive" checked sitting on a bed of cannabis leaves

Review: THC Concentrations Are “Unreliable” Indicators of Driving Impairment

“There are no empirically supported thresholds for blood or oral fluids that reliably indicate cannabis impairment,” investigators concluded.

Read More
Close-up of a legal cannabis bud next to a person's eye

Analysis: Pupil Size Not Predictive of Acute Cannabis Exposure

The study’s authors cautioned against relying on ocular measures as evidence of cannabis-induced impairment, suggesting that the tests lacked the accuracy and specificity necessary to be a valid evidentiary tool.

Read More
A physician holds a bottle of medical cannabis in one hand and points to a 3D model of an enlarged human skin and hair follicle cross section

Analysis: Hair Follicle Testing Detects Passive Exposure to Cannabis Smoke

Second-hand cannabis exposure for 15-minute intervals triggered positive test results.

Read More
Bernalillo County, New Mexico

New Mexico: Officials in State’s Largest County Vote to End Cannabis Testing for Most Public Employees

The policy removes cannabis “when used legally off-duty for medical or recreational purposes” from the county’s definition of illegal drugs.

Read More
a man smokes a legal cannabis joint outdoors

Pennsylvania: Pittsburgh Enacts Ordinance Protecting Medical Cannabis Patients From Employment Discrimination

“Gainful employment should be accessible to everyone regardless of the type of medical treatment they receive.”

Read More
CNMI flag flies against a background of cannabis leaves

US Territory Halts Pre-Employment Marijuana Testing

Public Law 23-27 eliminates pre-employment marijuana screening for most public jobs.

Read More
parents being questioned

Report: Allegations of Marijuana Use Frequently Trigger CPS Investigations

Marijuana-related investigations far outnumbered those triggered by allegations of maternal tobacco or alcohol use.

Read More
a vial of blood labeled "Test: THC" with the "+" box indicating "positive" checked sitting on a bed of cannabis leaves

Analysis: THC Blood Concentrations Not Correlated With Impairment

Consistent with prior studies, investigators concluded, “The correlation between drug concentration was high for ethanol, … but low for THC.”

Read More

Posts pagination

Page 1 Page 2 … Page 7 Next Page

Subscribe to NORML News

NORML News of the Week
  • June 18, 2026
  • June 11, 2026
  • June 4, 2026
  • May 28, 2026

Search the News Releases

Filter by Topic

Filter by Region

line
Advertise

NORML Reports

Marijuana Pardons and Expungements

Local Decriminalization Laws

Latest News

  • marijuana, handcuffs, and a gavel on an American flag

    DEA Limits Participants in Upcoming Marijuana Hearing to Those Opposed to Rescheduling

    June 19, 2026
  • a legal cannabis flower sits next to a lawfully owned handgun

    Supreme Court Affirms Second Amendment Rights for Cannabis Consumers

    June 18, 2026
  • a teen girl holding school books puts up a hand to say "no" to a teen boy offering her a joint

    Colorado: Cannabis Use by Teens Continues Decade-Long Decline

    June 17, 2026
line
Advertise

PODCAST

Live with NORML: Join the cannabis conversation for the latest cannabis policy and science news, advocacy action alerts, and live Q&A

Blog Archives

NORML STORE

Shop to legalize it
  • Join NORML
  • About NORML
  • NORML STORE
  • Find a Lawyer
  • Advertise
  • Privacy Statement
  • Contact Us
×
Home>News
Copyright 2026 © NORML and The NORML Foundation
All Rights Reserved
1380 Monroe St NW · PMB 607 · Washington, DC 20010
202-483-5500 · norml@norml.org

Loading Comments...