Blood tests are always an indispensable indication in every general health check-up, because the results of blood tests can reflect the health status of the individual. A complete blood count test can help doctors diagnose and detect problems such as disorders, infections or immune system disorders. In a blood test, there is an RDW index, so what are RDW blood cells and what is the meaning of the RDW index in a blood test? This article will help readers answer this question.

Red blood cells are blood cells that help transport oxygen to organs, for use by cells in the body. In some red blood cell diseases, there may be changes in the size of red blood cells, causing red blood cells to be smaller or larger than normal.