1. Testing of glycerin, propylene glycol, maltitol solution, hydrogenated starch hydrolysate, sorbitol solution, and other high-risk drug components for diethylene glycol and ethylene glycol: guidance for industry Publication: Silver Spring, MD : Center for Drug Evaluation and Research, May 2023 Subject(s): Drug ContaminationDrug IndustryDrug-Related Side Effects and Adverse ReactionsEthylene GlycolsGlycerolGovernment RegulationPropylene GlycolSorbitolUnited States