Question 49

70% isopropyl alcohol is the appropriate cleansing agent for capillary blood specimen collection.

Using 70% isopropyl alcohol is ideal for cleansing the skin prior to capillary blood collection as it effectively reduces microbial flora and is widely recommended for this purpose in clinical settings.

A) Povidone-iodine

Povidone-iodine is a strong antiseptic commonly used for surgical preparations but may not be the best choice for capillary blood collection due to its potential to interfere with certain laboratory tests. It can also cause staining of the skin, which is undesirable in this context.

B) Hand sanitizer

Hand sanitizer is designed for hand hygiene rather than skin antisepsis for blood collection. While it can reduce germs on hands, it is not suitable for cleansing the skin at the puncture site, particularly because it may not provide adequate disinfection for blood draws.

C) 70% isopropyl alcohol

70% isopropyl alcohol is an effective antiseptic that evaporates quickly and provides a suitable level of disinfection for the skin before capillary blood collection. Its efficacy in reducing skin flora makes it the preferred choice in this scenario.

D) 10% chlorine bleach solution

Chlorine bleach solutions are not appropriate for skin cleansing prior to blood collection. They can be irritating to the skin and are not designed for this type of application, making them unsuitable and potentially harmful in a clinical setting.

Conclusion

70% isopropyl alcohol is the best option for cleansing the skin before a capillary blood specimen collection due to its proven efficacy in reducing bacteria without compromising test results or causing irritation. Other options, including povidone-iodine, hand sanitizer, and chlorine bleach, either lack effectiveness, could interfere with tests, or may cause skin irritation, thus failing to meet the requirements for aseptic technique in phlebotomy.