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Observational
The Effect of Apple Cider Vinegar Supplementation on 24-hour Urine Chemistry in Adults
This is a single-center prospective cohort study to evaluate the effect of short-term daily apple cider vinegar (ACV) supplementation on urine chemistry.
Kidney StonesUrine Specimen Collection
University of ChicagoNCT07389226
Clinical Feasibility of Thebaine Urine Mass Spectrometry Drug Testing
To develop and validate a urine drug screen to detect thebaine.
Urine Specimen Collection
Children's Hospital Medical Center, CincinnatiNCT07192887