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The Urine Ammonium-pH Index is a Measure of Kidney Tubular Function

Preprint C Not peer reviewed Observational

Key takeaways

Researchers tested a urine measure, called the ammonium-pH index, to check how well the kidney's small tubes are working. Worse scores went along with faster loss of kidney function. This shows a link, not proof, and it needs more testing. It is a preprint, not yet peer reviewed.

Source

Preprint · medRxiv nephrology preprints · 2026-08-10
https://www.medrxiv.org/content/10.64898/2026.08.06.26359870v1?rss=1