| ferric chloride t. |
ferric chloride in acidic solution is added to a urine specimen; many substances are oxidized giving colored products. Positive reactions are given by melanin, acetoacetic acid, bilirubin, phenothiazines, salicylates, and the keto acids present in phenylketonuria, alkaptonuria, maple syrup urine disease, and oasthouse urine disease.
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| ferric subsulfate s. |
[USP] a reddish-brown aqueous solution of basic ferric sulfate, prepared from ferrous sulfate, sulfuric acid, and nitric acid; used as an astringent and hemostatic.
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