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Updated: Mar 29, 2026

Quantification of the Immunosuppressant Tacrolimus on Dried Blood Spots Using LC-MS/MS
Published on: November 8, 2015
[Comparative study of two techniques of ciclosporine monitoring]
Rim Charfi1, Hanène El Jebari2, Emna Gaïes1
1Service de pharmacologie clinique, Centre national de pharmacovigilance, Tunis, Tunisie, Faculté de médecine, Université de Tunis El Manar, Tunis, Tunisie.
Abstract:
Ciclosporine (CsA) is an immunosuppressant drug used in bone marrow transplantation in order to extend allograft survival. Despite its efficiency, CsA can expose to therapeutic failure or to toxicity because of underdosing or overdosage. So, many techniques of monitoring CsA in blood were used, the referance one is the chromatographic technique then, the automated techniques: fluorescence polarization immunoassay (FPIA) and chimiluminescent microparticle immunoassay (CMIA). In this study, we aimed to compare the results of CsA concentrations measured by the two automised techniques. Statistical studies showed that the two techniques were repeatable and reproductible. Results obtained by FPIA were slightly higher than those obtained by CMIA but without a significative difference. In conclusion, FPIA technique could be used to measure CsA blood concentration in replacement of CMIA in case of technical problems.
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