HTLV is a virus that can be transmitted through blood contact. Screening may be conducted to identify infected donors.

CMV is a common virus that can be transmitted through blood transfusions. Some blood banks screen for CMV

In areas where malaria is endemic, donors may be screened for malaria parasites to prevent the spread of the disease.

This parasitic infection, transmitted by triatomine bugs, is a concern in certain regions. Some blood banks screen for Chagas disease

In regions where West Nile Virus is prevalent, blood banks may screen for the virus to prevent its transmission

A blood test is used to detect the bacterium that causes syphilis, a sexually transmitted infection. Positive results may result

These tests identify the presence of hepatitis B and C viruses, both of which can lead to liver disease. Positive results

This test checks for the presence of the virus that causes AIDS. Donors who test positive for HIV are typically deferred