[PDF] A review of chemical 'spot' tests: A presumptive illicit drug identification technique. | Semantic Scholar (2024)

Fentanyl containing samples were distinguishable from the fentanyl containing samples with the Scott's and modified Scott's test when 1 mg of cocaine material was tested, whereas a 3‐mg cocaine sample produced the same color sequence as fentanyl.

The presumptive color spot test for z-drugs, such as zolpidem, zopicl one, and eszopiclone, has been created and validated and was proven to provide high-quality, dependable presumptive test findings and satisfy standards for preliminary screening usage.

Combining color tests with PS-MS offers a rapid, low-cost method for the collection and analysis of illicit drugs and demonstrates the technique's utility in real-world scenarios.

This work introduces a portable NIR analyzer that combines a broad wavelength range (1300 – 2600 nm) with a chemometric model developed specifically for forensic samples that allows for non-invasive, operator-safe chemical identification of potentially potent drugs of abuse.

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The use of inexpensive polyester-toner, rotation-driven microfluidic devices with a smartphone are described as a potential alternative for current presumptive colorimetric field-testing of illicit drugs, allowing for an objective and user-friendly image analysis technique for detection.

More than 40 NPS including synthetic cathinones, synthetic cannabinoids, piperazines and phenethylamines were tested using (MMC international) presumptive colour tests.

Two of the state-of-the-art apps for reporting the colour test results quantitatively in red-green-blue (RGB) format are evaluated and the compiled library database of presumptive test results contains over 3300 data points including over 800 unique drug/test combinations.

The NQS colour test method was validated to meet requirements for use in preliminary screening, providing qualitative and reliable presumptive test results.

The design and preliminary characterization of a novel sensor for drugs of abuse, DETECHIP, is described in this proof-of-concept note, addressing the need to use several different spot tests simultaneously for a single sample.

There are basically two types of problems associated with the use of these kits, one which is inherent in the color reaction and the other which lies with color interpretation.

It was found that although the coasters do detect the presence of GHB and ketamine, two drugs that have been associated with DFSA, there are limiting factors such as the high concentration of the drugs required, hindrance of the reaction due to beverage matrix, and extensive time requirements for ketamine analysis.

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