guaiac test

noun

Medical Definition of guaiac test

: a test for blood in urine or feces using a reagent containing guaiacum that yields a blue color when blood is present — see hemoccult

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“Guaiac test.” Merriam-Webster.com Medical Dictionary, Merriam-Webster, https://www.merriam-webster.com/medical/guaiac%20test. Accessed 24 May. 2020.

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