AMCA Phlebotomy Practice Exam 2025 – 400 Free Practice Questions to Pass the Exam

The most suitable gauge for a hand draw procedure is the 23 gauge. This size strikes a balance between being small enough to minimize discomfort for the patient, particularly in smaller veins often found in the hands, while still providing adequate blood flow for sample collection. A finer gauge needle like the 23 gauge is preferable for delicate or smaller veins since it reduces the risk of rolling or collapsing the vein during the draw. Additionally, a 23 gauge needle is less invasive, making it a better choice for patients who may have a lower tolerance for pain or are anxious about the procedure.

In comparison, larger gauges, such as 20 or 21 gauge, might be too large for a hand draw, potentially causing greater discomfort and increasing the risk of complications like hematoma or vein trauma. Conversely, while the 25 gauge is even finer, it may not provide sufficient blood flow for the required sample volume and could result in a longer collection time, which is not ideal for clinical procedures. The 23 gauge, therefore, provides the optimal combination of patient comfort and effective blood collection for hand draws.