Distal renal tubular acidosis

Distal renal tubular acidosis
Other names	Type 1 renal tubular acidosis
Radiograph of a person with rickets, a complication of both distal and proximal RTA.

Distal renal tubular acidosis (dRTA) is the classical form of RTA, being the first described. Distal RTA is characterized by a failure of acid secretion by the alpha intercalated cells of the distal tubule and cortical collecting duct of the distal nephron.^[1] This failure of acid secretion may be due to a number of causes. It leads to relatively alkaline urine, due to the kidney's inability to acidify the urine to a pH of less than 5.3.^{[citation needed]}