In infants, capillary puncture is performed at which site?

In infants, capillary puncture is performed at which site?

• A. The big toe
• B. The inner edge of the heel underside
• C. The outer edge of the underside of the heel
• D. The top of the foot

Answer: (C)

In infants, capillary puncture is done on the outer edge of the underside of the heel. This site provides reliable blood with minimal risk because it’s away from the bone (calcaneus) and surrounding tendons, reducing the chance of injury and pain. The central/inner areas and other sites like the top of the foot or a toe are less ideal due to higher risk of bone contact, tissue damage, or poor sample quality. So the outer edge of the heel’s plantar surface is the safest and most effective spot for newborn capillary blood collection.

In infants, capillary puncture is done on the outer edge of the underside of the heel. This site provides reliable blood with minimal risk because it’s away from the bone (calcaneus) and surrounding tendons, reducing the chance of injury and pain. The central/inner areas and other sites like the top of the foot or a toe are less ideal due to higher risk of bone contact, tissue damage, or poor sample quality. So the outer edge of the heel’s plantar surface is the safest and most effective spot for newborn capillary blood collection.