Table 4.
Variability in semiquantitative results around manufacturer-defined cut-point: results for T-SPOT.TB
| Variable Assessed | No. of Studies (Total No. of Samples) | Baseline Spot-Forming Units |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0–2 |
2.1–4 |
4.1–7.9* | 8–10 |
10.1–14.9 |
15–29.9 |
30–49.9 |
50–69.9 |
70–100 |
||
| % Conversions (Total N) | % Reversions (Total N) | |||||||||
| Repeat testing within 4 wk | 3 (270) | 2 (173) | 4 (26) | - (17) | 15 (13) | 33 (6) | 8 (13) | 0 (2) | 14(7) | 7.6(13) |
| Retesting under identical conditions | 1 (125) | 1 (84) | 7 (14) | - (8) | 0 (4) | 40 (5) | 0 (10) | — | — | — |
| Boosting by negative skin test | 1 (63) | 4 (56) | 0 (5) | - (2) | — | — | — | — | — | — |
*
Borderline range as defined by manufacturer; results that fall into borderline range were not classified as reversions or conversions.