Portable THC Reviews Count Laboratory Methods, Prototypes and Commercial Devices as Different Categories
A 2024 systematic review included 89 studies across laboratory techniques, portable sensor research and commercial devices. That total should not be presented as 89 independently validated portable THC products.
The study categories describe different maturity levels
The review identified 57 studies of conventional separation techniques, alongside optical and electrochemical sensor studies and commercial-device reports. A laboratory reference method, an experimental sensor and a marketed product occupy different roles in an evidence comparison.
Miniaturization does not settle quantitative accuracy
A small device may offer practical advantages while still facing selectivity, stability and specimen-interference challenges. The review described particular limitations for quantitative measurements. Detecting a target is not the same as reliably measuring its amount across authentic biofluids.
Commercial readiness requires more than a promising response
The authors emphasized durable sensors, reduced nonspecific interactions and resistance to matrix interference. Those development needs limit a claim that every technology in the review is ready for routine on-site use. Device-specific evidence remains necessary.
Interpreting the evidence
For a technology comparison, classify the evidence before comparing performance numbers. This synthesis maps a development landscape rather than certifying every listed approach. It does not establish that a portable concentration measurement, even if accurate, directly determines impairment.
Related reading: interpreting cannabis tolerance claims.
Research reference
Pierrick Clément; Walter K. Schlage; Julia Hoeng (2024). Recent advances in the development of portable technologies and commercial products to detect Δ9-tetrahydrocannabinol in biofluids: a systematic review. Journal of Cannabis Research. doi:10.1186/s42238-024-00216-0.
This discussion draws on the abstract and introductory material in the supplied research synthesis.
