TABLE 1.
Results of discordant samples in rapid tests, ELISA-1, ELISA-2, and immunoblot analysis
| Rapid test and result (n) | No. of resultsa by:
|
||||||
|---|---|---|---|---|---|---|---|
| ELISA-1
|
ELISA-2b
|
Immunoblotc
|
|||||
| Pos. | Neg. | Pos. | Neg. | Pos. | Neg. | Indeterminate | |
| TRI-DOT | |||||||
| Reactive (16) | 0 | 16 | 1 | 15 | 0 | 13 | 1 |
| Negative (20) | 18 | 2d | 5 | 14 | 1 | 15 | 3 |
| HIV-SPOT | |||||||
| Reactive (10) | 0 | 10 | 1 | 9 | 0 | 7 | 3 |
| Negative (2) | 1 | 1d | 2 | 0 | 1 | 1 | 0 |
a
Pos., positive; Neg., negative.
b
One sample was not tested by ELISA-2.
c
Three samples were not tested by immunoblot.
d
These samples showed visible color in the assay although results were below the cutoff, so they were tested by ELISA-2.