During the procedure, the tourniquet is removed to restore circulation. Once the blood has been collected, the needle is removed, and the puncture site is covered to stop any bleeding . Cotton or a bandage may be applied to the puncture site if there is any continued bleeding. 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. How the Test will Feel When the skin is pricked with the needle, the amount of discomfort varies.
Some people experience moderate pain while others feel only a prick or stinging sensation.
Afterward, the site may be bruised for a few days. This is a screening test for galactosemia . In normal diets, the major source of galactose in the diet is in the metabolism of lactose. In most people, galactose is converted to glucose by a series of chemical reactions. Each chemical reaction is catalyzed by an enzyme .