AUTHOR=Woolley Timothy , Rutter Emma , Staudenmaier Macarena 

TITLE=Comparability and Stability of Serum Creatinine Concentration in Capillary and Venous Blood

JOURNAL=British Journal of Biomedical Science

VOLUME=Volume 80 - 2023

YEAR=2023

URL=https://www.frontierspartnerships.org/journals/british-journal-of-biomedical-science/articles/10.3389/bjbs.2023.11402

DOI=10.3389/bjbs.2023.11402

ISSN=2474-0896

ABSTRACT=This study aimed to determine whether capillary samples could offer an alternative sampling method to venous samples for the assessment of serum creatinine using the enzymatic method and if this analyte was stable in unspun capillary blood for three days.Methods: Matched capillary and venous blood samples were collected from 48 patients for the determination of serum creatinine, one set being processed on day zero, the other set being stored at ambient temperature and then processed on day three. Self-collected capillary blood was compared with phlebotomist-collected venous samples.Results: Serum creatinine concentrations from venous and capillary blood samples taken on day zero were compared to concentrations in capillary blood from day three. Data produced showed serum creatinine concentrations from capillary and venous serum to be comparable.Conclusions: It is believed that this is the first published study to determine if self-collected capillary