In order to support the body's diagnosis, the common CD4 test may be utilised in conjunction with the CD8 cell test. To evaluate the immune systems of those who have been identified as having the human immunodeficiency virus, it can be used with HIV viral load testing. White blood cells known as T lymphocytes, or T cells, often referred to as CD4 cells in this instance, may fight infection and are crucial to the immune system's proper operation. The patient must thus review the test in order to use it to track their body's status. In order to solve this issue, the patient must simultaneously maintain control and adhere to the advice offered.