Which fingers are typically used for capillary puncture?

The correct response highlights that the middle and ring fingers are typically used for capillary puncture. These fingers are preferred as they generally provide an adequate blood supply while minimizing discomfort for the patient. The middle finger is often chosen due to its size and accessibility, allowing for a clean and effective puncture. The ring finger offers similar advantages.

Using the index finger, while possible, might not be as comfortable, and the pinky finger is usually too small and may provide insufficient blood volume for accurate testing. The thumb, while strong, is often avoided because it has its own pulse and may result in inaccurate readings. Therefore, the primary choice of the middle and ring fingers ensures both practicality and patient comfort during the procedure.