The VITA Project: Population-based Distributions of Protein C, Antithrombin III, Heparin-cofactor II and Plasminogen -Relationship with Physiological Variables and Establishment of Reference Ranges

Francesco Rodeghiero; Alberto Tosetto

doi:10.1055/s-0038-1650559

Thrombosis and Haemostasis, Inhaltsverzeichnis

Thromb Haemost 1996; 76(02): 226-233
DOI: 10.1055/s-0038-1650559

Original Article

Schattauer GmbH Stuttgart

The VITA Project: Population-based Distributions of Protein C, Antithrombin III, Heparin-cofactor II and Plasminogen -Relationship with Physiological Variables and Establishment of Reference Ranges

Autoren

Francesco Rodeghiero

The Hemophilia and Thrombosis Center, Department of Hematology, S. Bortolo Hospital, Vicenza, Italy
Alberto Tosetto

The Hemophilia and Thrombosis Center, Department of Hematology, S. Bortolo Hospital, Vicenza, Italy

Abstract

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Summary

A proper laboratory diagnosis of inherited thrombophilia due to defects of the coagulation system may be obtained only by a stringent definition of the diagnostic reference ranges taking into account the influence exerted by major physiological variables. To this purpose, we analyzed the data for Protein C, Antithrombin III, Heparin-Cofactor II and plasminogen coming from the first 4,000 subjects enrolled in the VITA Project. This is the first study that allows the establishment of reference ranges in a non-selected, active population using stringent standardization of clinical and laboratory measurements and multivariable regression techniques for data analysis.

Serum triglycerides and total cholesterol, together with plasma fibrinogen were found to influence the functional plasma level of the four considered proteins. Menopause increased AT-III concentration, while pill use increased Heparin-Cofactor II and plasminogen. PT and PTT ratio, gender, age, smoking, body-mass index, HDL cholesterol and blood group had minor effects. The effect of these variables should be taken into account for both clinical and epidemiologic purposes, using appropriate reference ranges or covariance analysis for adjustment.

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Referenzen

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