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This topic has appeared in the trending rankings 1 time(s) in the past year. While it does not trend frequently, its appearance suggests a renewed or concentrated surge of public interest.
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Duquenois–Levine_reagent entered the ranking for the first time today at position #. This is its highest position ever recorded.
This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-04-14 and was most recently seen on 2026-04-14.
The Duquenois reagent is used in the Rapid Modified Duquenois–Levine test, which is an established screening test for the presence of cannabis. The test was initially developed in the 1930s by the French medical biochemist Pierre Duquénois (1904–1986) and was adopted in the 1950s by the United Nations as the preferred test for cannabis. The test was originally claimed to be specific to cannabis.
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