Urobilinogen in Urine as Urobilinogen-Aldehyde

Urobilinogen in Urine as Urobilinogen-Aldehyde
Richard J. Henry, Alberto A. Fernandez, and S. Berkman

Clinical Chemistry 10: 440-446, 1964

In an attempt to complete the standardization of the “quantitative” method for the determination of urobilinogen in urine, recoveries of added urobilin varied erratically between 50 and 80%. Experiments to demonstrate the cause of the low recoveries suggest that urobilin is altered in the reduction procedure by the presence of urine.