Table 2

Distribution of hs-cTnI (ng/L) according to location when the biochemistry test was requested

LocationNo of patientsMedian (ng/L)Interquartile range (ng/L)Range (ng/L)Proportion >ULN (% (No))99th centile (ng/L)
Inpatients475971014 9947.29 (347)563
Outpatients92805832552.02 (187)65
Emergency department37067961066.07 (225)215
Resuscitation room 426112410 97919.48 (83)1839
Critical care units1232511513 08639.02 (48)12 097
Cardiac wards269142814 99421.56 (58)3967
Acute surgical unit3466926684.62 (16)92
Medical wards4731222880714.16 (67)1459
Medicine for older people wards 962027350820.83 (20)
Orthopaedic wards248894025.24 (13)184

Hs-cTnI=high sensitivity cardiac troponin I; ULN=upper limit of normal (40 ng/L).