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Fentanyl test strips are small pieces of paper that can detect the presence of fentanyl in many kinds of drugs, including methamphetamine, heroin, cocaine and pills.
Test kits can help. Fentanyl is often mixed with other drugs (including heroin, methamphetamine and cocaine) to increase potency, but it can be deadly. Test kits can help.
The strips can be used to test a number of drugs for the presence of fentanyl before ingestion. Here’s how they work. Fentanyl test strips can prevent overdoses.
The above photo shows the positive results of the number 2 Marquis reagent presumptive drug test when used with a sample of opium. It is the primary presumptive test used in Ecstasy reagent testing kits. It can also be used to test for such substances as opiates (e.g. codeine, heroin), and phenethylamines (e.g. 2C-B, mescaline).
The Froehde reagent is used as a simple spot-test to presumptively identify alkaloids, especially opioids, as well as other compounds.It is composed of a mixture of molybdic acid or a molybdate salt dissolved in hot, concentrated sulfuric acid, which is then dripped onto the substance being tested.
Reagent testing is one of the processes used to identify substances contained within a pill, usually illicit substances. With the increased prevalence of drugs being available in their pure forms, the terms "drug checking" or "pill testing" [1] may also be used, although these terms usually refer to testing with a wider variety of techniques covered by drug checking.