New lab test detects synthetic cannabinoids in blood quickly and accurately

This research describes a new rapid laboratory testing method for detecting semi-synthetic cannabinoids in blood using advanced mass spectrometry technology (LC-QTOF-MS). Semi-synthetic cannabinoids like Δ8-THC and hexahydrocannabinol (HHC) are chemically modified versions of cannabis compounds that emerged as legal alternatives to traditional marijuana, particularly after the 2018 Farm Bill created regulatory ambiguities in the United States. This study expanded an existing drug screening method to detect 24 different phytocannabinoids and semi-synthetic cannabinoids, addressing a critical gap in forensic and clinical testing capabilities as these new compounds proliferate in recreational markets across the US and Europe.

The validated method achieved strong technical performance across critical parameters: recovery rates of 87-118% (indicating reliable extraction), manageable matrix effects of 24-93%, and detection limits of 0.8-16 ng/mL. These results mean the test can reliably identify and measure both traditional cannabis compounds and their synthetic derivatives in blood samples with high accuracy. This development is particularly important for public health and law enforcement, as it enables toxicology labs to quickly screen for increasingly popular semi-synthetic cannabinoids that may not be covered by conventional cannabis testing—filling a crucial void in detection capabilities as the recreational drug market continues to evolve with new chemical variants.