USEDCRAP
| U | Ureterostomy |
| S | Small bowel fistula |
| E | Extra Chloride |
| D | Diarrhea |
| C | Carbonic anhydrase inhibitor |
| R | Renal tubular acidosis, kidney failure |
| A | Adrenal insufficiency |
| P | Pancreatic fistula |
Minnesregel för orsaker till metabol acidos med normalt anjongap.