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Critical values: percentiles of median TATs (minutes) for individual institutions.42
| TAT Interval | n | 10th | 50th | 90th |
|---|---|---|---|---|
| Prothrombin Time | ||||
| Verification | 630 | 17 | 3 | <1 |
| Notification | 602 | 13 | 3 | <1 |
| Total | 631 | 28 | 10 | 1 |
| K | ||||
| Verification | 640 | 14 | 4 | <1 |
| Notification | 607 | 8 | 2 | <1 |
| Total | 643 | 22 | 8 | 1 |
| Blood Cultures | ||||
| Verification | 584 | 193 | 40 | 2 |
| Notification | 561 | 24 | 5 | <1 |
| Total | 592 | 234 | 55 | 15 |
