Suspect screening of polyphenols in human biofluids is typically employed to determine association between polyphenols and the intake of a certain food . The results here are similar to previous research, with the majority of the polyphenol metabolites found in human urine being phenolic acids, including many that are either glucuronidated or sulfated. These results further emphasize the importance of biotransformation products, notably conjugated metabolites, when investigating human urine and potentially other biofluids , which many targeted methods still omit .