Why It Is Done. A phenylketonuria (PKU) screening test is done to see whether a newborn baby has the enzyme needed to use phenylalanine in his or her body. If this test shows that your baby has a phenylalanine problem, the doctor will do further testing to check whether your baby has PKU.he blood sample for PKU is usually taken from your baby's heel (called a heel stick). The test is done in the first few days after birth, as early as 24 hours after birth.
Add image to my collection. Technology to inject drugs into the body is a recent development. Hypodermic syringes (hypodermic means âbeneath the skinâ) consist of a hollow needle attached to a syringe. They pierce the skin and inject substances into the bloodstream. They are also used to extract liquid such as blood from the body.
Allow the formula to fill the tubing to the distal tip. Be sure to label the formula bag and the tubing. For intermittent tube feedings, have the syringe ready by removing its plunger. Pinch the proximal end of the feeding tube and attach the barrel of the syringe to the tube. Fill the syringe with a measured amount of formula, release the tube, and hold the syringe high enough to allow it to empty gradually by gravity.