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Fig. 3 | Journal of Nanobiotechnology

Fig. 3

From: Au–Ag assembled on silica nanoprobes for visual semiquantitative detection of prostate-specific antigen

Fig. 3

Schematic illustration of PSA detection using the lateral flow immunoassay (LFIA) platform with SiO2@Au–Ag NPs as a signal reporter. b Color. c Schematic of early diagnosis and prognosis detection by measuring the signal intensity [i: no recurrence (PSA < 0.30 ng/mL), ii: recurrence (0.30–1.00 ng/mL PSA), iii: no cancer (1.00–3.00 ng/mL PSA), iv: early-stage disease (3.00–10.00 ng/mL PSA), and v: late-stage disease (PSA > 10.00 ng/mL)]. Error bars represent the standard deviations of the means for three batches of analyte measurements

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