Which of the following is a proper technique for performing a capillary puncture?

The process of performing a capillary puncture involves specific techniques to ensure both safety and accuracy. One proper technique is to wipe away the first drop of blood with a clean cloth or gauze. This step is essential because the first drop can contain tissue fluid, skin contaminants, or other impurities that may interfere with the accuracy of the test results. By removing this initial drop, the samples collected afterwards are more likely to provide reliable information.

This technique is critical in laboratory practice, as contaminated samples could lead to misdiagnosis or inappropriate treatment decisions. The focus on cleanliness and accuracy is paramount in medical laboratory procedures, especially when dealing with specimens for testing.

Other techniques, such as making a long cut with a scalpel or puncturing at an angle less than 30 degrees, are not appropriate for capillary punctures, as they can increase the risk of complications or improper sampling. Puncturing quickly and without hesitation may seem efficient, but it is crucial to maintain an appropriate level of steadiness and care to avoid causing unnecessary pain or injury to the patient.