VetSkill Level 3 Diploma VN02 – Diagnostic Principles Practice Test

A reticulocyte is an immature red blood cell recently released from the bone marrow into the bloodstream. They still contain residual RNA that forms a fine network, which is why they appear as a reticular (net-like) structure under special stains. They lack a nucleus and mature into full-fledged red blood cells within about a day or two in circulation. This stage shows how actively the bone marrow is producing red cells and responding to the body’s needs. They are not platelets or white blood cells, and they are not yet mature red blood cells.