Total Ab ELISA for SARS-CoV-2 Virus (COVID-19) Brochure
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An Innovative Diagnostics Test Designed by Xiamen University & WANTAI SARS-CoV-2 Virus (COVID-19) For more information: wtexport@ystwt.com Serological and virolocal markers of COVID-19 Antibody levels Total antiboy IgM antibody IgG antibody RNA Wantai SARS-CoV-2 Ab ELISA is highly sensilatent tive and specific diagnostic kit intended for high-throughput, fast antibody screening for patients suspected for COVID-19 infection. Antibody dynamics during COVID-19 infection Clinical importance of combined RNA and antibody testing Days since onset 1 COVID-19 serological markers dynamics (Total Ab/ IgM/ IgG): 20%-40% of the patients developed antibodies on days 0-7 after onset 60%~70% of the patients developed antibodies on days 8-11 after onset > 90% of the patients had detectable levels of antibodies starting from day 12 after onset. COVID-19 molecular markers dynamics (RNA): RNA was detected in 60-75% of the patients on days 0-8 after onset RNA levels decrease to 40-50% starting from day 9 after onset COVID-19 combined serological and molecular markers increases the sensitivity of diagnosis while maintaining the high specificity. Among the serological markers, total Ab detection has greater significance in clinical practice.

Clinical studies in China Prospective clinical evaluation was conducted at four hospitals in China during the 2020 COVID-19 outbreak. Samples from total of 572 cases were tested among which 266 were confirmed (China COVID-19 diagnosis protocol, including China CFDA approved PCR tests), and 306 were COVID-19 excluded cases. Clinical trial centers Academy of Military Medical Sciences Shenzhen Third People’s Hospital Zhejiang University Sensitivity and specificity of Wantai SARS-CoV-Ab ELISA Confirmed/ excluded SARS-CoV-2 results Evaluation results PPV: 100% NPV: 95.33% Sensitivity: 94.36%...