Figure 7.

Calibration curve establishment and detection specificity evaluation. a) Calibration curve of HBsAg using SiO₂ NPs‐amplified Scadge‐Diag. b) Specificity tests: ΔA at 550 nm measured from various interfering biomarkers including 25 ng mL⁻¹ HBeAg, 52 U mL⁻¹ HCG, 72 ng mL⁻¹ CEA, 50 ng mL⁻¹ PSA, 10 ng mL⁻¹ AFP, and 5 ng mL⁻¹ HBsAg. Error bars show the standard deviations of three independent measurements.