Research Article

Blood Contamination in Saliva: Impact on the Measurement of Salivary Oxidative Stress Markers

Figure 1

Saliva samples of two probands (columns P1 and P2) contaminated by venous blood with the following final concentrations of blood: 10%, 5%, 2.5%, 1%, 0.1%, 0.01%, 0.001%, and 0%. Note the visible discoloration of saliva with blood contamination from 0.1%.