500
One of the most common causes of normal anion gap acidosis where hyperchloremia is present. And extra bonus point if you can name the type associated with hyperkalemia
What is RTA and type 4 (obstructibe uropathy, interstitial renal disease, multicystic dysplastic kidneys, Type 1 pseudohypoaldosteronism, diabetic nephropathy, 21-hydroxylase deficiency, renal transplant).