
Keywords: AA; ascorbic acid; ABTS; 2,2â²-azino-bis(3-ethylbenzthiazoline-6-sulfonicacid) diammonium salt; AEF; analytical enhancement factor; AFP; alpha fetoprotein; Anti-CEA; anticarcinoembryonic antibody; Au NBPs; gold nanobipyramids; AuNCs; gold nanoclusters; A