The purpose of this neonatal screening test using the filter paper card is the early detection for inborn errors of metabolism.
Which of the following is the most appropriate ?
a. The paper should be dried by hot air.
b. Blood is generally collected from the heel of the infant.
c. Optimal time for collection is within 24 hours after birth.
d. Blood should be applied to both sides of the filter paper card.
e. Blood should be collected while the skin is still wet with alcohol.