Urine colour change as an indicator of change in daily water intake: a quantitative analysis

摘要

Urine colour (U (Col)) is simple to measure, differs between low-volume and high-volume drinkers, and is responsive to changes in daily total fluid intake (TFI). However, to date, no study has quantified the relationship between a change in TFI and the resultant change in U (Col). This analysis aimed to determine the change in TFI needed to adjust 24-h U (Col) by 2 shades on an 8-colour scale, and to evaluate whether starting U (Col) altered the relationship between the change in TFI and change in U (Col).