October 3, 1977

More Causes of Red Urine

Author Affiliations

Albert Einstein College of Medicine New York

JAMA. 1977;238(14):1501. doi:10.1001/jama.1977.03280150071025

This article is only available in the PDF format. Download the PDF to view the article, as well as its associated figures and tables.


To the Editor.—  At least in the Bronx, at our large urban public hospital, neither phenazopyridine hydrochloride (which we cannot afford because of the New York City budget crisis) nor phenolsulfonphthalein, which we do not use as a test of kidney function, are a cause of "red urine." Rather, the commonest cause of red ("orange, pink, red, brown, and black") urine is laxatives containing phenolphthalein, followed closely by others containing cascara.