TABLE 4.
Results of three LD WB tests and the C6 ELISA for the BBI and CDC performance panels
| Test and result | No. of results with indicated reference resulta:
|
|
|---|---|---|
| Positive | Negative | |
| IgG Marblot | ||
| Positive | 23 (8/15) | 4 (1/3) |
| Negative | 1 (0/1) | 29 (6/23) |
| IgG Virablot | ||
| Positive | 23 (8/15) | 4 (1/3) |
| Negative | 3 (0/3) | 27 (6/21) |
| IgG BBI WB | ||
| Positive | 22 (8/14) | 5 (1/4) |
| Negative | 1 (0/1) | 29 (6/23) |
| C6 ELISA | ||
| Positive | 42 (13/29)b | 0 (0/0) |
| Negative | 4 (0/4)c | 11 (2/9)c |
| IgM Marblot | ||
| Positive | 16 (3/13) | 10 (4/6) |
| Negative | 1 (1/0) | 30 (7/23) |
| IgM Virablot | ||
| Positive | 22 (6/16) | 4 (1/3) |
| Negative | 7 (1/6) | 24 (7/17) |
| IgM BBI WB | ||
| Positive | 20 (5/15) | 6 (2/4) |
| Negative | 0 (0/0) | 31 (8/23) |
a
Results are positive or negative according to MarDx WB reference results provided by BBI or the CDC. Data are presented as BBI + CDC (BBI/CDC), where BBI indicates results for the BBI mixed-titer performance panel and CDC indicates results for the CDC LD evaluation panel.
b
The result indicated is a positive Lyme WB, which is positive for either IgM or IgG or for both.
c
The result indicated is a negative Lyme WB, which is negative for both IgG and IgM.