Final answer:
According to CLSI guidelines, the standard depth for dermal puncture on full-term infants is 2.0 mm and for premature infants, it's 0.85 to 1.0 mm.
Step-by-step explanation:
The standard depth of dermal puncture for infants recommended by the Clinical and Laboratory Standards Institute (CLSI), not CISI, is significantly shallower than that for adults to prevent injury to the infant's heel bone (calcaneus) and ensure only capillary blood is collected. According to CLSI guidelines, the maximum depth for an infant heel puncture should be 2.0 mm for full-term infants, and for premature infants or those with less subcutaneous tissue, the maximum depth should be 0.85 to 1.0 mm. It's crucial for healthcare professionals to adhere strictly to these recommendations to minimize risk during blood collection procedures for infants.