Table 2.
Specificity of Abbott SARS-CoV-2 IgM and IgG assays on Pre-Covid19 samples.
| Group Characteristics | Results |
|||
|---|---|---|---|---|
| IgM | IgG | |||
| N | 78 | Positive | 1 | 0 |
| Median Age | 12.5 Y | Negative | 77 | 78 |
| Age Range | 11 d to 19 Y | NPAa | 98.70% | 100% |
| Male | 34 (44%) | |||
| Female | 44 (56%) | Median Index (S/C) | 0.03 | 0.04 |
| Average Index (S/C) | 0.06 | 0.06 | ||
| Collection Period | 9/30/17 to 1/24/20 | Range of Index (S/C) | 0.01 to 0.21 | 0.01 to 0.29 |
IgM Index (S/C) ≥ 1.00 is Positive.
IgG Index (S/C) ≥ 1.4 is Positive.
a
NPA = Negative Percent Agreement.