Which of the following is NOT a commonly used antiseptic for blood draws?

Hydrogen peroxide is not commonly used as an antiseptic for blood draws due to its potential to cause tissue irritation and its effervescent properties, which can create bubbles that complicate blood collection. The use of hydrogen peroxide can also result in the formation of free radicals, which may interfere with laboratory tests and affect the sample's integrity.

In contrast, alcohol, chlorhexidine, and iodine are widely accepted as effective antiseptics for blood draws. Alcohol is commonly used due to its rapid action in reducing skin flora. Chlorhexidine is favored for its prolonged antimicrobial activity, particularly in surgical and invasive procedures. Iodine products, while used less frequently in routine venipuncture, are effective antiseptics, especially in certain clinical settings.

Understanding the rationale behind selecting appropriate antiseptics is essential for maintaining sample integrity and ensuring patient safety during blood collection procedures.