Participants analyze samples for the presence of marihuana and have the option to quantitate THC. Available to U.S. laboratories with a DEA registration number and international laboratories pending appropriate documentation. Samples ship in June.
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Participants analyze samples for the presence/identity of controlled synthetic drug substances. Available to U.S. laboratories with a DEA registration number and international laboratories pending appropriate documentation. Samples ship in July.

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Participants determine the concentration of two Methamphetamine Hydrochloride samples. Available to U.S. laboratories with a DEA registration number and international laboratories pending appropriate documentation. Samples ship in May.
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Participants assess their ability to compare collected fingerprints and determine whether or not they originate from a single source. This test is only available online. Test materials are made available in May.
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Participants compare questioned latent prints to known inked prints to establish identification. Test material is available in two formats (photo or digital download). Samples ship in January.

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Participants process several pieces of porous and nonporous evidence to develop latent prints. Samples ship in June.
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Participants analyze a variety of documents within the context of the discipline. Samples ship in February.
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Participants analyze a blank bar stock in an attempt to restore a serial number. Samples ship in March.
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Participants analyze a blank bar stock in an attempt to restore a serial number. Samples ship in July.
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Participants examine and compare the firearm evidence provided (expended bullets or expended cartridge cases) to determine if the suspect weapon fired the questioned evidence. Samples ship in May.
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