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Analytical characteristics of the Roche highly sensitive troponin T assay and its application to a cardio-healthy

G Koerbin1, J R Tate, P E Hickman

  • 1ACT Pathology, The Canberra Hospital, Woden, ACT 2605, Australia. gus.koerbin@act.gov.au

Annals of Clinical Biochemistry
|October 8, 2010
PubMed

Insights

The new highly sensitive troponin T (hs-TnT) assay accurately measures cardiac troponin levels, even in healthy individuals. This advancement improves precision for diagnosing myocardial infarction and assessing patient risk.

Area of Science:

  • Clinical Chemistry
  • Cardiology
  • Biomarker Analysis

Background:

  • Current cardiac troponin (cTn) assays aim to meet diagnostic criteria for myocardial infarction, requiring a rise and fall above the 99th percentile.
  • Evaluating new assays is crucial for accurate diagnosis and risk assessment in patients with suspected heart attack.

Purpose of the Study:

  • To assess the analytical performance of a new highly sensitive troponin T (hs-TnT) assay.
  • To determine if the hs-TnT assay meets diagnostic specifications using a healthy Australian reference population.

Main Methods:

  • Determined the imprecision profile of the Roche hs-TnT assay across multiple analyses.
  • Analyzed troponin T distribution in 104 samples from a cardio-healthy Australian population.

Main Results:

  • The hs-TnT assay demonstrated a coefficient of variation below 10% at the 99th percentile in the reference population.
  • 42% of healthy individuals had detectable troponin T concentrations above the limit of detection.
  • Observed variations in troponin T levels based on age and gender.

Conclusions:

  • The new hs-TnT assay offers enhanced precision and sensitivity for detecting low troponin concentrations.
  • Detectable troponin levels are common in apparently healthy individuals, underscoring the need for clinical judgment.
  • The assay supports improved diagnosis and risk stratification for myocardial infarction.
Abstract

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