Clinical Report: Putting a POC Troponin to the Test
Overview
An independent verification study confirmed that the QuidelOrtho TriageTrue point-of-care high-sensitivity troponin I assay meets performance claims, showing strong concordance with laboratory assays. The assay demonstrated acceptable precision and minimal interference from hemolysis.
Background
The evaluation of point-of-care (POC) high-sensitivity troponin assays is critical for the timely diagnosis of myocardial infarction, particularly in emergency settings. Accurate and rapid troponin testing can significantly impact patient management and outcomes. The introduction of reliable POC assays may enhance clinical pathways, especially in rural or low-resource environments.
Data Highlights
| Measurement | Value |
|---|---|
| Intra-assay precision CV at 2.4 ng/L | 25% |
| Intra-assay precision CV at 8.5 ng/L | 12.2% |
| Intra-assay precision CV at >10 ng/L | 2.8% to 15.9% |
| Correlation with other assays | 0.89 to 0.99 (except Roche hs-TnT: 0.79) |
| Hemolysis interference limit | Minimal up to 10 g/L |
| Comparisons with secondary analyzers | All met acceptable limits (116 comparisons) |
Key Findings
- The TriageTrue hs-TnI assay met manufacturer performance claims for precision and concordance.
- Intra-assay precision coefficients of variation ranged from 2.8% to 15.9% at concentrations above 10 ng/L.
- Correlation coefficients with other assays were high, ranging from 0.89 to 0.99, indicating strong agreement.
- Hemolysis caused minimal interference, exceeding the manufacturer's claim of 1.96 g/L.
- All comparisons with secondary analyzers met acceptable limits, confirming reliability.
Clinical Implications
The TriageTrue hs-TnI assay can be effectively integrated into clinical workflows for rapid assessment of myocardial infarction. Its performance characteristics support its use in emergency care settings, enhancing diagnostic efficiency and patient management.
Conclusion
The verification study supports the analytical performance of the TriageTrue assay, affirming its suitability for clinical use in various healthcare settings. This advancement in POC testing may improve patient outcomes through timely diagnosis.
References
- Analytical Verification of a Point-of-Care High-Sensitivity Troponin I Assay, The Journal of Applied Laboratory Medicine, 2023 -- Putting a POC Troponin to the Test
- Rapid Intraoperative Point-of-Care PTH Testing Using the Philips Handheld Magnotech Device
- Open Forum Infectious Diseases — Real-world Use of Molecular Point-of-care Testing for Sexually Transmitted Infections (STIs) in the Emergency Department: Why It Matters for Acute Care Management
- Clinical Research in Cardiology — Evaluation of the 2020 ESC Guidelines for Diagnosis and Risk Assessment in Patients with Suspected Non-ST-Segment Elevation Acute Coronary Syndrome
- Basic Research in Cardiology — Variability in Troponin I Phosphorylation at the Cellular Level in a Porcine Model of Heart Failure Induced by Pacing
- High-sensitivity point-of-care measurement of cardiac troponin A scientific statement of the association for acute cardiovascular care of the ESC
- Effectiveness of Point-of-Care High-Sensitivity Troponin Testing in the Emergency Department: A Randomized Controlled Trial - ScienceDirect
- Analytical Verification of a Point-of-Care High-Sensitivity Troponin I Assay | The Journal of Applied Laboratory Medicine | Oxford Academic
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