When is a capillary puncture recommended?

A capillary puncture is specifically recommended for patients with limited access to veins. This method of blood collection is particularly beneficial in situations where venipuncture is difficult or impractical, such as with children, infants, or patients with fragile veins. Capillary puncture allows for the collection of a small amount of blood without the need for more invasive techniques, making it a safer and more accessible option for those individuals.

In contrast, if a patient has strong veins, venipuncture would generally be preferred because it can yield a larger volume of blood and is better suited for many laboratory tests. Routine blood tests are typically performed easier using venous blood collection; capillary blood samples may not provide the needed volume or quality for certain tests. Healthy adults with easily accessible veins are usually not candidates for capillary punctures unless there's a specific reason to do so.