Troponin I (HS-TnI)
Clinical Biochemistry
Sample and container requirements
Serum Lithium Heparin Plasma (paediatrics only)
Minimum volume required
Special requirements
None
Patient preparation
None
Sample viability
Turnaround time
1 hour (urgent pathway)
Reference range
The cut-off values used for the Abbott Alinity Troponin I assay are based on 99th percentiles and are as below: Females: <16 ng/L Males: <34 ng/L (Source: Abbott Diagnostics)
Clinical guidance
Troponin I is a part of the troponin complex that plays an integral role in muscle contraction. It binds to actin in thin myofilaments to hold the actin-tropomyosin complex in place. Measurement of troponin I is used for the assessment of patients that present with acute coronary syndrome and chest pain. Please refer to LabTestsOnlineUK to learn more about troponin I. https://labtestsonline.org.uk/tests/troponin-test
Notes
Images to go here
This information was last updated on 19 August 2026