Types of drugs that relieve depression...
(SSRIs), such as citalopram (Celexa), escitalopram oxalate (Lexapro), fluoxetine (Prozac), fluvoxamine (Luvox), paroxetine HRI (Paxil), and sertraline (Zoloft)
Hope this helped
The answer is not parasites, or pathogens. These are tested for before the donor and recipient are even matched
The antibody screen will test for antigens. So I believe the answer is Antibodies.
Know your partner and limit your number of partners, by having multiple partners you will have a higher chance of getting STIs. Use a latex condom, by using one of these you will lessen your chances of getting an STI greatly