Serology techniques include agglutination, precipitation, complement-fixation, fluorescent antibodies, and others. There is no special preparation for the test. The physical and psychological preparation you can provide for this or any test or procedure depends on your child's age, interests, previous experience, and level of trust. When the needle is inserted to draw blood, some people feel moderate pain, while others feel only a prick or stinging sensation. Afterward, there may be some throbbing .
Immunofluorescence can detect and discern between acute and past infection with the virus.
Veins and arteries vary in size from one patient to another and from one side of the body to the other. Obtaining a blood sample from some people may be more difficult than from others.