Test specifications | WANTAI SARS-CoV-2 Ab ELISA¥ | Quantitative anti-RBD ELISA (QRBD)€ | Chemiluminescence assay (CLIA) |
---|---|---|---|
Manufacturer | Beijing Wantai Biological Pharmacy Enterprise Co., Ltd, China | In-house kit developed by Translational Health Science And Technology Institute (THSTI), India | Abbott Laboratories Diagnostics, USA |
Principle | ELISA | ELISA | Chemi-luminiscence Assay |
Type | Qualitative | Quantitative | Qualitative |
Target protein | Receptor binding domain of spike protein | Receptor binding domain of spike protein | Nucleocapsid protein of SARS-CoV-2 |
Antibody captured | Total antibody (IgM + IgG + IgA) | IgG | IgG |
Test sensitivity | 94.5% | 100% | Unknown@ |
Test specificity | 100% | 100% | Unknown@ |
Reference Value | ≥ 0.19 OD = Positive < 0.19 OD = Negative | ≤ 7.99 BAU#/ml = Negative > 7.99—12.0 BAU#/ml = Equivocal ≥ 12.0 BAU#/ml = Positive | < 1.4 S/C$ = Negative ≥ 1.4 S/C$ = Positive |