<prompt> PCT absorbs all except: September 2008SodiumAmino acidsGlucoseHydrogen ions  <response>: Ans. D: Hydrogen ions Normally about 65 of the filtered load of sodium and water, essentially all the filtered glucose and amino acids and a slightly lower percentage of filtered chloride are reabsorbed by the proximal tubule. The proximal tubules also secretes organic acids, bases and hydrogen ions into the tubular lumen. 