LAUSR

OBJECTIVE Reflect on how the evolution of legislation related to blood and blood-based products has shaped the role of nurses in hemotherapy services. METHODS A reflective study, carried out employing surveys in databases, about the evolution of the nurse's role in hemotherapy services. RESULTS Several legislations, published since 1950, have encouraged blood donation and shaped the work of nurses in hemotherapy services, being the most relevant Law #10.205/2001 (Lei nº 10.205/2001), about blood collection, processing, storage, distribution, and blood transfusion; and COFEN's resolution # 629/2020 (COFEN nº 629/2020), which addresses in detail the practice of these services. FINAL CONSIDERATIONS The evolution of legislation related to blood and blood-based products contributed to the consolidation of nurses' attributions in hemotherapy services since it guaranteed legal support and defined the practices in these services.