Which statement best describes the order of draw for venipuncture in different institutions?

Prepare for the CAMLPR Specimen Collection Competency Test. Practice with diverse question sets including multiple-choice and flashcards. Each question includes hints and explanations to help you become proficient before the exam.

Understanding why the order of draw matters and why policies vary by institution: the sequence is chosen to prevent cross-contamination from tube additives and to protect the accuracy of test results, especially cultures. There isn’t a single universal sequence used everywhere because hospitals tailor procedures to their workflows and policies. The most common approach is to start with blood culture bottles, which helps ensure that additives or skin flora from later tubes don’t contaminate cultures or affect microbial growth. After cultures, other tubes follow the institution’s specified order. Saying there is a universal standard, or that the order is always a light blue tube first, or that the order doesn’t affect sample quality, isn’t correct.