Another Assay in the COVID-19 Toolbox
Access SARS-CoV-2 IgG II is a semi-quantitative assay that measures a patient’s level of antibodies in response to a previous SARS-CoV-2 infection, providing a numerical result in arbitrary units (AU) from 2.00-450 AU/mL1 and a qualitative result reported as non-reactive (<10AU/mL) or reactive (>/=10AU/mL) to SARS-CoV-2.
With a semi-quantitative COVID-19 IgG antibody assay, clinicians can:
- Establish a baseline to evaluate an individual’s adaptive immune response based on a numerical value
- Assess an immune response to SARS-CoV-2 over time
Always, Quality First
High Specificity of 100% Minimizes Inaccurate Results
The Center for Disease Control (CDC) Recommends three strategies to improve positive predictive value3: