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HelpTest Code HSTNI High Sensitivity Troponin I (hs-TNI)
Laboratory Code
LAB747
Specimen Requirements
Submit only one of the following:
Preferred
Specimen Type: Serum
Container/Tube: Gold Top (SSTII)
Volume: 5.0 mL
Minimum Volume: 0.5 mL serum
Collection Instructions: Allow specimen to clot for 30 mins and centrifuge within 2 hrs.
Acceptable
Specimen Type: Plasma
Container/Tube: Green Top (Li Heparin/PST)
Volume: 4.5 mL
Minimum Volume: 0.5 mL plasma
Collection Instructions: Centrifuge within 2 hrs.
Specimen Stability
| Specimen Type | Serum |
|---|---|
| Ambient | 8 hours |
| Refrigerate | 24 hours |
| Frozen | 1 month |
Methodology
Chemiluminescent Immunoassay
Days and Times Performed
24 hrs, TAT 1 day
Specimen Condition
| Gross Haemolysis | Alert/Reject |
|---|---|
| Icterus | OK |
| Lipaemia | OK |
| Others | Not applicable |
Reference Interval
≤ 26.2 ng/L
Critical value: > 26.2 ng/L
Testing Laboratory
National University Hospital
Clinical Chemistry, 67724346
Useful For
Exclusion diagnosis of acute myocardial infarction.
Service Code
31054
LOINC Code Information
89579-7
Alias
TnI
Update
Last updated 11/03/2025