Table 1.
Comparison of TST after PPD-S and PPD-RT23 administration.
| Participant number | IGRAa | Previous TSTb reading in mm (PPDc-S) | Previous TST date | Repeat TST reading in mm (PPD-RT23) | Repeat TST reading date |
|---|---|---|---|---|---|
| 2RTB0013 | Positive | 16 | 30/01/2018 | 18 | 21/01/2019 |
| 2RTB0186 | Negative | 0 | 17/11/2017 | 0 | 21/01/2019 |
| 2RTB0253 | Negative | 0 | 23/11/2017 | 0 | 21/01/2019 |
| 2RTB0165 | Negative | 0 | 16/11/2017 | 0 | 24/01/2019 |
| 2RTB0183 | Negative | 0 | 17/11/2017 | 0 | 24/01/2019 |
| 2RTB0135 | Negative | 0 | 01/12/2017 | 0 | 24/01/2019 |
| 2RTB0015 | Positive | 0 | 30/01/2018 | 0 | 25/01/2019 |
| 2RTB0005 | Positive | 25 | 02/02/2018 | 28 | 28/01/2019 |
a
IGRA (interferon gamma release assay)
b
TST (tuberculin skin test)
c
PPD (purified protein derivative)