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Updated: Aug 14, 2026

Development of a Lateral Flow Immunochromatographic Strip for Rapid and Quantitative Detection of Small Molecule Compounds
Published on: November 13, 2021
[Development of salicylic acid dipstick test]
Miho Kirihara1, Fujio Ishizawa, Tetsuya Ishiwata
1Scientific Criminal Investigation Laboratory, Ibaraki prefectural Police Headquarters.
Abstract:
A dipstick test was successfully devised for the screening of salicylic acid in urine. It, named "salicylic acid dipstick test", is TLC plastic sheet which was soaked into 5% (w/v) of ferric chloride aqueous solution, then was covered with Oblate and dried. The test paper was dipped into the sample, then it immediately turned purple under the condition of more than 100 microg/ml of salicylic acid in urine. This device was useful for the emergency screening of salicylic acid in acute poisoning cases with aspirin.

