. Author manuscript; available in PMC: 2017 Dec 1.

Published in final edited form as: Anal Chem. 2016 Oct 27;88(22):11123–11129. doi: 10.1021/acs.analchem.6b03220

Table 5.

Matrix Effect Evaluation Using a 7-Point Calibration Curve (147 to 848 pM, 40–231 pg/mL) was Prepared in 4 Different Matrixes and Spiked with 551 pM (150 mg/mL) Internal Standard

		matrix
	neat	saline	charcoal	male	female	mean	95% CI
slope	0.006	0.006	0.006	0.006	0.006	0.006	0.0060–0.0061
R²	0.99	0.99	0.99	0.98	0.98	0.99	0.986–0.989
mean ME%		103.5	102.8	92.2	96.2	98.7	96.8–100.5