final urine

Practically nothing is left in the final urine.

It is the amount of compound entering the kidney that got excreted into the final urine.

About 40% of the urea filtered is normally found in the final urine, since there is more reabsorption than secretion along the nephron.

For instance, para aminohippuric acid (PAH) is almost completely excreted in the final urine, and thus almost none is found in the venous return (P 0).