Which of the following sites is appropriate to prepare for dermal specimen collection on a toddler?

The nondominant dorsal hand is not ideal for dermal specimen collection in toddlers, as the skin in this area can be thinner and more prone to bruising. Additionally, this site may be more challenging to secure and may not provide adequate blood flow compared to other sites.

Although the nondominant third finger is a potential site for dermal collection, it is generally less preferred for toddlers due to the risk of movement and difficulty in stabilizing the finger during the procedure. The fingers can also be more sensitive, increasing discomfort for the child.

The antecubital space is typically used for venipuncture rather than dermal collections, especially in toddlers. This site is more suitable for older children and adults due to the larger veins present. In toddlers, it poses risks such as greater discomfort and increased chance of complications due to the movement during the procedure.