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Troponin I
(a.k.a TnI, Troponin)
minimum sample volume required ~ 5ml
Test Code: TNI
Tube type: SST
Other acceptable tube types
Lithium heparin (pale green)
Special instructions
See Chest Pain Protocol on A&E & Cardiology. Timing details mandatory or (for samples from A&E) state if sample is an 'admission' sample in clinical details.
Time limit for add on
24 hours post collection
Reference Range
Male
<20 Normal troponin
20 - 49 Indeterminate troponin
>49 Positive troponin
Female
<12 Normal troponin
12 - 49 Indeterminate troponin
>49 Positive troponin
Units
ng/L
Turnaround Time
1
day
Department: Biochemistry
Clinical Application
hsTropI should be interpreted in the context of the RUH Acute Coronary Syndrome (ACS) pathway.
An isolated troponin does not exclude ACS.
NOTE: As of 10/01/23 Troponin I replaces Troponin T.
