STUDY ON THE VARIATION OF FERRITIN CONCENTRATION IN PATIENTS TESTED FOR HEALTH ASSESSMENT. - Ciurea, Tatiana; Tiţă, Daniela; Beloiu, Ramona; Prisecaru, Maria; Stoica, Ionuţ (Scientific Studies & Research. Series Biology / Studii si Cercetari Stiintifice. Seria Biologie, 2023)