The Relationship of Urea Concentration to Blood and to Saliva-(II)

Urea Nitrogen Determined by Modified Urease-Indophenol Method

Abstract

The modified urease-indophenol method was applied to determine salivary urea nitrogen concentration.
This method enables easy sampling and yields good correlation between blood urea nitrogen and salivary urea nitrogen.
From these results, it has been determined that this method is especially suitable for mass-screening, and for patients whose blood sampling is difficult.