Other Tests

If you're infected with HIV, additional blood tests may be ordered to check for other infections. Tests may be administered to check the effects of medications on your liver and kidneys and other organs. Other common tests include:
CD4+T Cell Count — As soon as HIV enters the body, it begins to destroy or disable your bodys CD4+T cells, the immune system's key infection fighters. The CD4+T cell count is a blood test that measures the number of CD4+T cells and helps assess the immune system's health. The CD4+T cell count correlates with a person's risk of developing opportunistic infections and is a useful marker for HIV disease staging and treatment planning. The Center for Disease Control and Prevention (CDC) recommends CD4+T testing every three to six months in all HIV-infected patients, though the need may vary by individual.
HIV Resistance Testing — Resistance to anti-retroviral drugs is fairly common in some HIV-positive patients. Resistance testing can be useful to determine the drugs not to use in a patient with increasing levels of the virus despite therapy or in a previously untreated individual who may have been infected with a virus that is resistant to one or more of the HIV drugs.