What is the maximum penetration depth recommended for a capillary puncture?

For capillary punctures, the recommended maximum penetration depth is 2.0 mm. This depth is crucial to ensure effective blood collection while minimizing the risk of damaging underlying tissues, such as nerves and bones. A depth of 2.0 mm strikes a balance between obtaining an adequate blood sample and ensuring patient safety.

If the puncture is deeper than this recommended depth, there is an increased risk of complications, including pain, bruising, or infection, and it may also lead to hitting more sensitive areas that could result in complications for the patient. Therefore, following the guideline of a maximum penetration depth of 2.0 mm during a capillary puncture is vital for safe and effective phlebotomy practice.