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Fig. 1

Fig. 1. From: The Poison Pen: Bedside Diagnosis of Urinary Diquat.

Addition of sodium bicarbonate and sodium dithionite to urine specimens containing decreasing concentrations of diquat. This picture was taken immediately after the addition of dithionite to one of three sets of specimens. (Set C is pictured here; similar results in dose-dependent color change were noted with the other sets, A and B). Each number represents decreasing concentrations of diquat or control as follows: 1—urine only, 2—730 mg/L, 3—365 mg/L, 4—219 mg/L, 5—73 mg/L, 6—51.1 mg/L, 7—36.5 mg/L, 8—21.9 mg/L, 9—7.3 mg/L, 10—3.65 mg/L, 11—0.73 mg/L, and 12—glyphosate-only herbicide solution

Rais Vohra, et al. J Med Toxicol. 2010 March;6(1):35-36.

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