Second Subject: Specimen Collection
Description
Which of the following tests is most commonly performed on skin puncture samples?
a. PCV
b. pH
c. PKU
d. PTT
- Newborn screening may detect a variety of genetic, infectious, and metabolic diseases using specimens collected on filter paper circles included on newborn screening cards. Phenylketonuria (PKU) is one of the most commonly ordered tests on newborns and screens for a genetic defect preventing the enzymatic breakdown of phenylalanine, which may ultimately accumulate in toxic levels leading to brain damage and mental retardation.
