Important notice for Canadian clients: Changes to US HHS Drugs of Abuse testing panel
On January 16, 2025, SAMHSA, under the Department of Health and Human Services (HHS), published the “Mandatory Guidelines for Federal Workplace Drug Testing Programs – Authorized Testing Panels” via the Federal Register /Vol. 90, No. 10/Thursday, January 16, 2025/Rules and Regulations
These revisions will take effect for any samples received by the laboratory on July 7, 2025, regardless of the collection date. These changes apply only to federal agency workplace drug testing programs. They DO NOT apply to drug testing programs regulated by the DOT, the U.S. Coast Guard (USCG), or the Nuclear Regulatory Commission (NRC).
What's Changing for You
Fentanyl has been added to the testing panel.
Screening cutoff Confirmation cutoff Fentanyl 1 ng/ml 1 ng/ml Norfentanyl 1 ng/ml
Abbreviations for THC and its metabolites have been updated.
HHS previously used the abbreviation THC for Δ-9-tetrahydrocannabinol and THCA for Δ-9-tetrahydrocannabinol-9-carboxylic acid.
Old Nomenclature New Nomenclature THC Δ9THC THCA Δ9THCC
The current panels remain in effect until July 6, 2025. Again, the US DOT and US NRC testing programs remain unaffected at this time.
In addition, the US DOT has not yet adopted the 10/12/23 HHS UrMG revision regarding a 4000 ng/mL morphine confirmatory cutoff.
If you have any questions, please contact Omega Laboratories at +1-289-919-3188 or email customerservice@omegalabs.net.