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 auxiliary detection metrics 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 the results in 15 minutes.