Urine Anion Gap (UAG)
Estimates urinary ammonium (NH4+) excretion in a normal-anion-gap metabolic acidosis to separate a renal cause (impaired acid excretion, e.g. renal tubular acidosis) from extrarenal bicarbonate loss such as diarrhea.
Estimates urinary ammonium (NH4+) excretion in a normal-anion-gap metabolic acidosis to separate a renal cause (impaired acid excretion, e.g. renal tubular acidosis) from extrarenal bicarbonate loss such as diarrhea.