Salivary urea: a marker for chronic renal disease

ABSTRACT

Background: Salivary urea, correlates well with serum urea, can be utilized as a low-cost, easily accessible and noninvasive diagnostic tool for screening patients in early stages of kidney disease, especially for developing countries with limited resources. Saliva for diagnostic purpose, is inexpensive, non-invasive, easy to collect, use, store and transport, contain high amount of disease biomarkers and shows efficient and reliable results: