Designed for qualitative detection of SARS-CoV-2 antibodies in human serum, plasma, and whole blood samples, novel coronavirus antibody detection reagent (Colloidal Gold Method) is regarded as an auxiliary detection metric towards on-site screening for suspected cases that have the negative results after nucleic acid testing. This rapid test can aid in the diagnosis of coronavirus infection and significantly shorten the detection time, yielding results in approximately 15 minutes.