What is the length of a lancet use for a newborn for a blood collection to avoid penetrating the bone?

For blood collection in newborns, a lancet with a depth of 1.0 to 2.0 millimeters is typically recommended to avoid penetrating the bone. This depth is sufficient to obtain a blood sample from the heel or fingertip without causing injury to underlying structures. It's important to follow specific guidelines and protocols for safe blood collection in infants.