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Updated: Jul 6, 2026

Measuring Rates of Herbicide Metabolism in Dicot Weeds with an Excised Leaf Assay
Published on: September 7, 2015
A case of green urine after ingestion of herbicides
Yun-Suk Shim1, Hyo-Wook Gil, Jong-Oh Yang
1Division of Nephrology, Department of Internal Medicine, SoonChunHyang University Cheonan Hospital, Cheonan, Korea.
Abstract:
The development of discolored urine may have many possible causes. Here we present the case of a 76-year-old woman who was admitted after ingesting the inorganic herbicides, mefenacet and imazosulfuron. Her urine color changed to green almost immediately. Since the patient had no specific medication or medical history we considered that the most likely cause of the change in urine color was the ingestion of the herbicides. Spectrophotometric analysis of the urine was conducted and a peak was observed in the green area of the wavelength spectrum. These findings show that mefenacet and imazosulfuron should be considered in the differential diagnosis of green discolored urine.
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