Table 2.
Distribution of hs-cTnI (ng/L) according to location when the biochemistry test was requested
| Location | No of patients | Median (ng/L) | Interquartile range (ng/L) | Range (ng/L) | Proportion >ULN (% (No)) | 99th centile (ng/L) |
|---|---|---|---|---|---|---|
| Inpatients | 4759 | 7 | 10 | 14 994 | 7.29 (347) | 563 |
| Outpatients | 9280 | 5 | 8 | 3255 | 2.02 (187) | 65 |
| Emergency department | 3706 | 7 | 9 | 6106 | 6.07 (225) | 215 |
| Resuscitation room | 426 | 11 | 24 | 10 979 | 19.48 (83) | 1839 |
| Critical care units | 123 | 25 | 115 | 13 086 | 39.02 (48) | 12 097 |
| Cardiac wards | 269 | 14 | 28 | 14 994 | 21.56 (58) | 3967 |
| Acute surgical unit | 346 | 6 | 9 | 2668 | 4.62 (16) | 92 |
| Medical wards | 473 | 12 | 22 | 8807 | 14.16 (67) | 1459 |
| Medicine for older people wards | 96 | 20 | 27 | 3508 | 20.83 (20) | — |
| Orthopaedic wards | 248 | 8 | 9 | 402 | 5.24 (13) | 184 |
Hs-cTnI=high sensitivity cardiac troponin I; ULN=upper limit of normal (40 ng/L).