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.
The 700 Series Microliter syringes are the standard syringe for delivery of liquids in the volume range from 5 to 500 Î¼L. Steel plungers are individually fitted into the borosilicate glass barrels.The accuracy of these syringes is +/- 1% of the nominal volume.he 700 Series Microliter syringes are the standard syringe for delivery of liquids in the volume range from 5 to 500 Î¼L. Steel plungers are individually fitted into the borosilicate glass barrels.