Table 2

Donor	1 (n = 25)			2 (n = 25)			3 (n = 25)
Diluent	Saline	Saline 50%, saliva 50%	Saliva	Saline	Saline 50%, saliva 50%	Saliva	Saline	Saline 50%, saliva 50%	Saliva
Spearman´s rank correlation	0.991	0.99	0.989	0.989	0.991	0.99	0.989	0.988	0.986
Pearson correlation	1	1	1	1	1	0.998	1	0.999	1
Slope	0.157	0.157	0.157	0.13	0,13	0.13	0.137	0.138	0.137
Y-intercept	-0.12	-0.076	-0.084	-0.076	-0.052	0.028	-0.036	-0.024	-0.096

Blood was diluted with either saline only (reference/golden standard), saline 50%/saliva 50% or saliva only.
For every single donor, the values from the different measurements showed a high degree of correlation, reflecting that saliva did not have any impact on the measurements.