but potassium clearance increased greatly when delivery of sodium to the distal nephron was increased by infusion of nonchloride anions : sulfate ( sodium sulfate infusion , low sodium chloride diet ; ck/gfr = 63.7 +/- 0.4 % ) or bicarbonate ( sodium bicarbonate plus acetazolamide infusion ; ck/gfr = 81.7 +/- 1.7 % ) .
C0003075
anions
C0038720
sulfate