Pharmacokinetic profiling via dried blood spot sampling method

Authors

PELCOVÁ Marta KREJČÍŘOVÁ Eva ŠTOLCOVÁ Miriam JUŘICA Jan GLATZ Zdeněk

Year of publication 2022
Type Appeared in Conference without Proceedings
Citation
Description Pharmacokinetic (PK) profiles are still an inevitable part of preclinical safety studies. Generally, PK studies require the collection of a series of blood samples in sufficient volumes (usually about 200 µl). Typically, animal protocols limit the total blood draw between 10 and 15 % of the total blood volume allowed within a 2-week period. Further, animal models are subjected to ethical standards to be carefully monitored and principles of the 3Rs are required: replacement, reduction and refinement. Our pilot PK study of clozapine (CLO) was conducted in a single Wistar albino rat. CLO was administrated subcutaneously in a single dose bolus (20 mg/kg) and blood samples were taken from a retroorbital plexus by a calibrated glass capillary and spotted onto the card (Whatman 903 Protein Saver Card). CLO concentrations were acquired by LC-MS method and corresponding PK parameters were calculated by Kinetica 4.4 software. The obtained parameters are in agreement with data from a large cohort study.
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