Which technique should be employed to locate a 'suspected hidden vein'?

When trying to locate a suspected hidden vein, palpation is a key technique. This involves using your fingers to gently feel for a vein beneath the skin. During palpation, a phlebotomist can assess the size, depth, and direction of the vein, which aids in determining the best way to proceed with venipuncture. Successful palpation allows for a more accurate approach, reducing the risk of multiple needle insertions and increasing patient comfort.

While other techniques mentioned are also useful in certain circumstances, palpation remains a fundamental skill that every phlebotomist should master to effectively locate veins, especially those that may not be readily visible. It relies on the tactile feedback provided by the practitioner, making it a critical and hands-on method in this context.