How to differentiate the three types of renal tubular acidosis.

Go to Dynamed section on Renal tubular acidosis (RTA)

Click “Diagnosis” on left menu

Review table:

Testing overview:
-patients with metabolic acidosis due to RTA have low serum bicarbonate concentration, normal anion gap, and negative base excess

-pattern of blood tests and urine studies may help determine specific type of RTA(1, 2, 3, 4)

Test Results in Presence of Metabolic Acidosis (Spontaneously or After Acid Loading)

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