Which device is typically used for blood collection in capillary sampling?

In capillary sampling, a lancet is the device specifically designed for obtaining small blood samples from a capillary source, such as a fingertip or heel. This tool creates a tiny puncture in the skin, allowing blood to flow freely from the capillaries without the need for a larger volume of blood that would typically be collected with venous sampling. The lancet's design facilitates this process in a safe and efficient manner.

While syringes and vacutainers are commonly used for venous blood collection, they are not suitable for capillary sampling due to the larger amounts of blood they are intended to draw. A needle holder is used to stabilize a needle during venipuncture, and is not designed for the capillary sampling process at all. Thus, the lancet is the appropriate choice for collecting capillary blood samples.