| Test material activity, STIS | Test material passivity, STIS | SUM |  |
---|---|---|---|---|
Test material activity, in vitro | 9 | 1 | 10 | 90Â % positive prediction |
Test material passivity, in vitro | 0 | 10 | 10 | 100Â % negative prediction |
SUM | 9 | 11 | 20 | Â |
 | 100 % sensitivity | 91 % specificity |  | |
Accuracy 95Â % | Â |