MICROANATOMY

Detailed explanation-1: -When you have not drank enough fluids your kidneys try to save as much water as they can and cause your urine to be darker in colour (more concentrated).

Detailed explanation-2: -Medium-dark yellow urine is often an indication that you are dehydrated. Drink 2-3 glasses of water now.

Detailed explanation-3: -During whole-body dehydration, urochrome concentration increases as antidiuresis is stimulated via increased arginine vasopressin production, thus increasing water reabsorption from the collecting duct of the nephron. This physiological response to dehydration results in darker and more concentrated urine (3, 4).

Detailed explanation-4: -Dark urine is most commonly due to dehydration. However, it may be an indicator that excess, unusual, or potentially dangerous waste products are circulating in the body. For example, dark brown urine may indicate liver disease due to the presence of bile in the urine.