One effective alternative to using iodine compounds for cleansing a venipuncture site prior to collecting a specimen for blood cultures is to use:

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Chlorhexidine compounds are an effective alternative to iodine for cleansing a venipuncture site before collecting a specimen for blood cultures because they have broad-spectrum antimicrobial activity and provide rapid and persistent action against a wide range of microorganisms.

One Effective Alternative to Using Iodine Compounds for Cleansing a Venipuncture