<prompt> Normal anion gap is -8-10mmolL10-12 mmolL12-16 mmolL16-20 mmolL  <response>: B 10-12 mmoIL 365-H 18th 443 - Davidson 21st Normal anion gap is 10 to 12 mmolL Calculated as follows : AG Na - C1- Co-3 It consist of for the most part of protein in the anion form HP04 S04 and organic acids. The unmeasured cations are K, Ca or Mg.Normal 6-12 meq anion gap Loss of HCO3 - Diarrhoea- Recovery from diabetic Ketoacidosis- Pancreatic fluid loss ileostomy unadopted- Carbonic anhydrase inhibitors Chloride retension I. Renal tubular acidosisII. Ileal loop bladder Administration of HC1 equivalent or NH4C1 Arginine and lysine in Parenteral nutritionCauses of High anion gap metabolic acidosis Lactic acidosisToxins Ketoacidosis- Ethylene glycol- Diabetic- Methanol- Alcoholic- Salicylates Aspirin- Starvation- Propylene glycol - Pyroglutamic acid Renal failure acute and chronic. 