NHA Certified Phlebotomy Technician (CPT)/Topics/Blood Culture Collection
Blood Culture Collection practice test: free NHA Certified Phlebotomy Technician (CPT) questions
Drill 10 Blood Culture Collection questions with instant explanations and official citations.
Topic overview & passing targets
Blood Culture Collection Domain Overview
The Blood Culture Collection module is a core testing domain on the NHA Certified Phlebotomy Technician (CPT). QuizCram provides 10 practice questions for this domain with verified handbook rationales.
- Target Passing Benchmark: 78% (120 items (100 scored + 20 pretest) · 2-hour limit · 390 scaled score to pass)
- Domain Questions: 10 items
- Source Material: Official Handbooks
Sample Practice Questions for Blood Culture Collection
- Question 1Ref: NHA CPT Test Plan — Section 4A: Blood Cultures
When collecting a blood culture, approximately how much blood should be drawn into each culture bottle?
Show Answer & Explanation
Correct Answer
B. 20-30 mL for adults, divided between aerobic and anaerobic bottlesThe correct answer is 20-30 mL for adults, divided between aerobic and anaerobic bottles. Adequate blood volume is critical for blood culture sensitivity. The recommended volume is 20-30 mL for adults, typically split 10-15 mL per bottle (aerobic and anaerobic). Insufficient volume reduces the likelihood of detecting bacteremia. Drawing only 5-10 mL total halves the sensitivity. One to two milliliters is far too low for reliable detection. Overfilling bottles can cause false positives or processing errors. Pediatric volumes differ based on the child's weight.
Frequently Asked Questions About Blood Culture Collection
QuizCram covers 10 practice questions in the Blood Culture Collection domain, mapped directly to the official examination blueprint.
The benchmark score is 78% (120 items (100 scored + 20 pretest) · 2-hour limit · 390 scaled score to pass).
Yes. All questions on QuizCram are written against official handbooks and blueprint specifications with legal citations.