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Association between blood urea nitrogen-to-albumin ratio and kidney stones: A cross-sectional study based on NHANES

Preprint C Not peer reviewed Observational

Key takeaways

This study looked at a blood test called the BAR to see if it predicts kidney stones. It used data from US health surveys from 2007 to 2020. The researchers found a link between higher BAR levels and kidney stones. This is an observational study, so it shows a connection, not a cause.

Source

Preprint · medRxiv nephrology preprints · 2026-09-18
https://www.medrxiv.org/content/10.64898/2026.09.16.26363211v1?rss=1