What substance would you found in higher concentration in distal tubule than in proximal tubule?

A substance that would be found in higher concentration in the distal tubule than in the proximal tubule is potassium. The distal tubule is responsible for fine-tuning the reabsorption and secretion of various substances, including potassium, to help maintain electrolyte balance in the body. In contrast, the proximal tubule is primarily responsible for the reabsorption of water and essential nutrients, rather than the regulation of electrolyte levels.

Urea