Final answer:
STDs that require a blood draw for testing include HIV and syphilis, using serological tests for antibodies and a nucleic acid test for HIV, as well as the VDRL test for syphilis.
Step-by-step explanation:
The student is asking about which sexually transmitted diseases (STDs) require a blood draw for testing. Blood tests to diagnose various STDs include serological tests for antibodies, particularly for diseases such as HIV and syphilis. For HIV, tests such as the nucleic acid test (NAT) can detect the presence of the virus itself, which is useful during the early stages of infection when antibodies may not be present.
Another example is the Venereal Disease Research Lab test, also known as the VDRL test, which is used to diagnose syphilis by detecting anti-treponemal antibodies in a patient's blood. Additional tests like the Sure-Vue Mono Test kit can be used for detecting conditions such as Infectious Mononucleosis.
There are several STD blood tests that require a blood draw. One example is the HIV blood test, which looks for antibodies or HIV antigens in the blood. Another example is the test for syphilis, such as the Venereal Disease Research Lab (VDRL) test, which detects anti-treponemal antibodies in the blood. These tests are performed by taking a blood sample from the patient and sending it to the lab for testing.