What are collection devices used in skin punctures called?

Collection devices used in skin punctures are called capillary tubes, which are specifically designed to collect small volumes of blood obtained from capillary samples, such as those from fingerstick or heelstick procedures. These tubes are often made of glass or plastic and have a fine diameter to facilitate the collection of the blood sample directly from the site of the skin puncture.

Capillary blood samples are particularly useful in various clinical settings, especially when quick tests are needed or in pediatric patients where venipuncture may be more challenging. Collecting blood via skin puncture is less invasive and generally causes less discomfort to patients, making capillary tubes an essential tool in phlebotomy.

The other collection devices listed, such as Vacutainer tubes, are typically used in venipuncture procedures and are designed for larger volume blood withdrawals. Syringes can also be used for blood collection but are not specific to skin puncture methods. Blood storage tubes, while useful for preserving samples after collection, do not refer to the initial collection method used in skin puncturing. Therefore, capillary tubes are the most appropriate answer for this question.