No special preparations are needed for this test. On the day of the test, having your child wear a T-shirt or short-sleeved shirt can make things easier for your child and the technician who will be drawing the blood.
he blood sample will be processed by a machine, and the results are usually available within a few days.
Elevated levels of specific IgE antibodies may mean an allergy is present. However, the amount of IgE doesn’t necessarily predict the severity of the reaction. For this reason, your doctor will interpret the results in comparison with your child’s symptoms and other allergy tests.
Having a blood test is relatively painless. Still, many kids are afraid of needles. Explaining the test in terms your child can understand might help ease some of the fear.
Allow your child to ask the technician any questions he or she might have. Tell your child to try to relax and stay still during the procedure, as tensing muscles and moving can make it harder and more painful to draw blood. It also may help for your child to look away when the needle is being inserted into the skin