Renal tubular acidosis diagnostic study of choice

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] ; Associate Editor(s)-in-Chief: Aditya Ganti M.B.B.S. [2] Jogeet Singh Sekhon, M.D. [3] Syed Ahsan Hussain, M.D.[4]

Urine pH is the gold standard test for the diagnosis of renal tubular acidosis.

• Urine pH is the gold standard test for the diagnosis of renal tubular acidosis.^[1]
• The following result of urine pH is confirmatory of renal tubular acidosis:
  • Urine pH of 5.3 or less.
  • In most cases of distal renal tubular acidosis, the urine pH is persistently 5.5 or higher