NWCA Phlebotomy Technician Credential Practice Exam

Aseptic technique is essential when collecting blood cultures because skin bacteria are the most common contaminants that can mimic infection. To minimize contamination, thoroughly cleanse the venipuncture area with an approved antiseptic and let it dry, then use sterile collection equipment and gloves. Collect from a clean site with proper venipuncture technique, and avoid touching the interior of the culture bottles or any sterile components. Inoculate the culture bottles according to the manufacturer’s instructions right after collection to maintain sample integrity, and minimize any contact with skin flora during handling. These steps reduce the introduction of normal skin microbes into the culture, lowering false-positive results and the need for unnecessary treatments.