Table 8. Linear regression slopes and intercepts from X-Y plots of measured concentration versus expected concentration.

Sample	Linear regression intercept value (95% CI), PPM	Linear regression slope value (95% CI)
Contrived sample	0.120 (−0.14, 0.37)	1.04 (1.01, 1.06)
Breast Cancer (BC) Clinical sample	0.69 (−1.02, 2.41)	1.07 (0.91, 1.23)
Lung Cancer (LC) Clinical sample	−0.57 (−2.03, 0.89)	1.03 (0.90, 1.17)