<prompt> Reticulocyte level in newborn is?0.2-1.51-1.62.5-66-10.2  <response>: Ans. is c i.e., 2.5-6 o Reticulocyte count is the percentage of reticulocytes in total red blood cells. Number of reticulocytes Reticulocyte count --___ x 100 Total number of RBCs o The reticulocyte count serves as an impoant tool to indicate shoened RBC survival and the subsequent appropriate response by the bone marrow to increase RBC production. o Reticulocytes are young RBCs that have just left the marrow but still contain residual RNA. o Normally, they remain for only 1 to 1.5 days in the blood. o Normal reticulocytes count in an adult is 0.5 to 2. o In normal newborn range is 1.8 to 5.8. 