Table S2.

Types and critical values of interference samples

Endogenous interference	Concentration	Cancer biomarker	Concentration
Bilirubin	342 μM	CEA	15 ng·mL−1
Heme	2 g·L−1	CA199	111 U·mL−1
Hemoglobin	2 g·L−1	CA125	105 U·mL−1
Triglyceride	37 mM	CA724	18 U·mL−1
Cholesterol	13 mM
Homologous protein	Concentration	Hormone protein	Concentration
Cystatin C	2.7 mg·mL−1	Corticotropin	0.2 ng·mL−1
Cysteine	0.24 μM	Gastrin	0.7 ng·mL−1
Homocysteine	30 μM

Abbreviation: CEA, carcinoembryonic antigen.