Semi-quantitative test cocaine purity evaluation - NarcoCheck

A review of chemical 'spot' tests: A presumptive illicit drug identification technique - Philp - 2018 - Drug Testing and Analysis - Wiley Online Library

Saliva screening test for 5 drugs - NarcoCheck

Drug Checking Quarterly Report (Q3 2022): Philadelphia, Pennsylvania, USA

Electrochemical paper-based analytical devices: ten years of development - Analytical Methods (RSC Publishing) DOI:10.1039/C9AY02350J

Recent advances in microfluidic paper-based assay devices for diagnosis of human diseases using saliva, tears and sweat samples - ScienceDirect

Cotinine PreDosage test (3 detection levels) - NarcoCheck

Saliva screening test for 5 drugs - NarcoCheck

Recent advances in the development of portable technologies and commercial products to detect Δ9-tetrahydrocannabinol in biofluids: a systematic review, Journal of Cannabis Research

UNODC - Bulletin on Narcotics - 1953 Issue 2 - 007

EZ Test - 10x Coke Purity

Cocaine Purity Test Kit - Quickly & Accurately Check the Purity of Cocaine Samples

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Cocaine Purity Test Kit (TLC) — PRO Test