Evaluation of 99th percentile and reference change values of a high-sensitivity cTnI method: A multicenter study

Aldo Clerico, Andrea Ripoli, Silvia Masotti, Veronica Musetti, Rosalia Aloe, Mariella Dipalo, Sara Rizzardi, Ruggero Dittadi, Cinzia Carrozza, Simona Storti, Sergio Storti, Lucia Belloni, Marco Perrone, Tommaso Fasano, Simone Canovi, Mario Correale, Concetta Prontera, Cristina Guiotto, Domenico Cosseddu, Marco MigliardiSergio Bernardini

Risultato della ricerca: Contributo in rivistaArticolo in rivista

20 Citazioni (Scopus)


Background: The Italian Society of Clinical Biochemistry (SIBioC) and the Italian Section of the European Ligand Assay Society (ELAS) have recently promoted a multicenter study (Italian hs-cTnI Study) with the aim to accurately evaluate analytical performances and reference values of the most popular cTnI methods commercially available in Italy. The aim of this article is to report the results of the Italian hs-cTnI Study concerning the evaluation of the 99th percentile URL and reference change (RCV) values around the 99th URL of the Access cTnI method. Materials and methods: Heparinized plasma samples were collected from 1306 healthy adult volunteers by 8 Italian clinical centers. Every center collected from 50 to 150 plasma samples from healthy adult subjects. All volunteers denied the presence of chronic or acute diseases and had normal values of routine laboratory tests (including creatinine, electrolytes, glucose and blood counts). An older cohort of 457 adult subjects (mean age 63.0 years; SD 8.1 years, minimum 47 years, maximum 86 years) underwent also ECG and cardiac imaging analysis in order to exclude the presence of asymptomatic cardiac disease. Results and conclusions: The results of the present study confirm that the Access hsTnl method using the DxI platform satisfies the two criteria required by international guidelines for high-sensitivity methods for cTn assay. Furthermore, the results of this study confirm that the calculation of the 99th percentile URL values are greatly affected not only by age and sex of the reference population, but also by the statistical approach used for calculation of cTnI distribution parameters.
Lingua originaleEnglish
pagine (da-a)156-161
Numero di pagine6
RivistaClinica Chimica Acta
Stato di pubblicazionePubblicato - 2019


  • Acute coronary syndrome
  • Adult
  • Aged
  • Aged, 80 and over
  • Article
  • Cardiac troponins
  • Cardiac-Gated Imaging Techniques
  • Cohort Studies
  • Electrocardiography
  • Female
  • Healthy Volunteers
  • High-sensitivity methods
  • Humans
  • Italy
  • Male
  • Middle Aged
  • Myocardial infarction
  • Reference Values
  • Reference population
  • Risk stratification
  • Troponin I
  • Troponin T
  • Young Adult
  • adolescent
  • age
  • aged
  • blood
  • blood cell count
  • blood sampling
  • cardiac gated imaging
  • cardiac imaging
  • clinical trial
  • cohort analysis
  • creatinine
  • electrocardiography
  • electrolyte
  • female
  • glucose
  • human
  • human experiment
  • laboratory test
  • limit of blank
  • limit of detection
  • limit of quantitation
  • male
  • middle aged
  • multicenter study
  • normal human
  • normal value
  • practice guideline
  • priority journal
  • reference value
  • sensitivity analysis
  • sex difference
  • standards
  • troponin I
  • troponin T, adult
  • very elderly
  • volunteer
  • young adult, Adolescent


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