Thromb Haemost 1999; 82(01): 145-148
DOI: 10.1055/s-0037-1614644
Scientific and Standardization Committee Communication
Schattauer GmbH

A Soluble Fibrin Standard: Comparable Dose-response with Immunologic and Functional Assays[*]

Bonnie I. McCarron
1   From the Vascular Medicine Unit, Department of Medicine University of Rochester School of Medicine and Dentistry Rochester, New York, USA
,
Victor J. Marder
1   From the Vascular Medicine Unit, Department of Medicine University of Rochester School of Medicine and Dentistry Rochester, New York, USA
,
Joel J. Kanouse
1   From the Vascular Medicine Unit, Department of Medicine University of Rochester School of Medicine and Dentistry Rochester, New York, USA
,
Charles W. Francis
1   From the Vascular Medicine Unit, Department of Medicine University of Rochester School of Medicine and Dentistry Rochester, New York, USA
› Institutsangaben

This work was supported in part by Grants HL-07152 and HL-30616 from the National Heart, Lung and Blood Institute, National Institutes of Health, Bethesda, Maryland.
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Publikationsverlauf

Received 14. Januar 1998

Accepted after resubmission 19. Februar 1999

Publikationsdatum:
11. Dezember 2017 (online)

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Summary

A soluble fibrin (SF) preparation has been developed as a potential standard by the Scientific and Standardization Committee for use in assays evaluating in vitro preparations and patient plasma samples. The SF standard was prepared by reaction of factor XIII-free fibrinogen with thrombin, followed by neutralization with hirudin and solubilization of the fibrin in acetic acid. As characterized by SDS-PAGE, the polypeptide chain structure shows the anticipated loss of fibrinopep-tides and lack of sγ or α chain crosslinking. The standard was added to pooled normal plasma at concentrations from 12.5 μg/ml to 340 μg/ml and tested with four commercially available assays based on immunologic reactions using ELISA or latex agglutination or on t-PA cofactor activity for plasminogen to plasmin conversion. Absolute “soluble fibrin” concentrations were calculated using the manufacturers’ calibrators and showed distinct dose-response relationships for each assay. Expression of the results following log-transformation produced a series of parallel lines, indicating that this SF preparation can serve as a standard, effectively normalizing the disparate proprietary internal calibrators currently used for each assay.

* Report prepared on behalf of the DIC Subcommittee of the SSC