What blood collection method is most commonly used for infants?

The most commonly used blood collection method for infants is capillary puncture. This technique is favored primarily because it minimizes the risk of complications associated with larger venipunctures and is less stressful for both the infant and the healthcare provider. In infants, capillary punctures are typically performed on the heel or the fingertip, allowing for sufficient blood collection with minimal trauma to the child.

Capillary blood samples are adequate for many routine laboratory tests, making them practical for neonatal care. This is particularly important in situations where repeated blood draws are necessary, as capillary puncture helps preserve the integrity of the veins and limits discomfort for the infant.

Other methods like venipuncture, while used in certain situations, generally require more extensive training and can be more invasive, which is why they are not the first choice for infants. Arterial puncture is typically utilized for specific tests that require arterial blood and is mainly performed on older children and adults. Concurrent collection refers to simultaneous sample collection from two or more sources, which is less relevant in the context of typical infant blood sampling procedures.