NHA Certified Phlebotomy Technician (CPT)Specimen HandlingEasy
A phlebotomy technician is preparing to process a blood culture specimen. Which of the following describes the appropriate handling for this specimen type?
- ACentrifuge immediately upon arrival to separate plasma.
- BTransport to the microbiology laboratory at room temperature.
- CStore in the refrigerator at 2°C to 8°C for up to 24 hours.
- DTransport to the microbiology laboratory at 37°C.
Show answer & explanationAnswer & explanation
Correct answer: B. Transport to the microbiology laboratory at room temperature.
Blood cultures are typically transported to the microbiology laboratory at room temperature to promote bacterial growth if present. Refrigeration or extreme temperatures can inhibit growth and affect test results.
Why the other options are wrong
- A. Centrifuging blood cultures is inappropriate as it separates components, which can interfere with microbial detection.
- C. Refrigeration can inhibit the growth of many common pathogens, leading to false-negative results for blood cultures.
- D. Protecting from light and transporting on ice are specific requirements for different specimen types, not blood cultures.
Blood Culture Transport
Blood culture specimens are collected to detect microorganisms in the bloodstream and must be transported to the microbiology laboratory promptly at room temperature.
- Room temperature transport (typically 20-25°C).
- Prompt delivery to microbiology.
- Do not refrigerate or centrifuge.
Memory trick: Room Temperature Rules for Rapid Results.