- Cigna Medicare
- Individual & Family Plans
- International Plans
- Offered Cigna Through Work?
- Find a Doctor
- Informed on Reform
- Health and Wellness »
- Cigna Home Delivery Pharmacy
CD4+ cells are part of the immune system and are a type of white blood cell. White blood cells protect the body against infection. CD4+ cells are also called T-lymphocytes, T-cells, or T-helper cells.
HIV invades and destroys CD4+ cells. But the body continues to produce new CD4+ cells to fight the HIV infection. If the infection is not treated with medicines, the body gradually loses the ability to produce enough CD4+ cells to replace the number that are being destroyed by HIV. As the number of CD4+ cells in the blood drops, it becomes harder for the immune system to fight infections.
CD4+ counts are measured every 3 to 4 months in people who are infected with HIV. The CD4+ count is an important measurement of how HIV is affecting your immune system and can help you decide when to begin treatment for HIV or when you need to try a different combination of medicines.
- HIV: Taking Antiretroviral Drugs
- HIV: When Should I Start Taking Antiretroviral Medicines for HIV Infection?
- Human Immunodeficiency Virus (HIV) Infection
- Viral Load Measurement
|Primary Medical Reviewer||E. Gregory Thompson, MD - Internal Medicine|
|Specialist Medical Reviewer||Peter Shalit, MD, PhD - Internal Medicine|
|Last Revised||April 5, 2012|
|By:||Healthwise Staff||Last Revised: April 5, 2012|
|Medical Review:||E. Gregory Thompson, MD - Internal Medicine|
Peter Shalit, MD, PhD - Internal Medicine
© 1995-, Healthwise, Incorporated. Healthwise, Healthwise for every health decision, and the Healthwise logo are trademarks of Healthwise, Incorporated.