Phlebotomy Plan

CPT practice question: Special Collections

Special CollectionsDifficulty 3/5

Why does the test plan require calculating volume requirements for pediatric and geriatric patients?

  1. ATo avoid causing illness in the patient through the volume collected
  2. BTo ensure the laboratory receives the maximum volume each tube allows
  3. CTo determine which closure colour the collection tube should carry
  4. DTo establish how many tube inversions the specimen will require
Show answer and rationale

Correct: A. Task 4E states the purpose directly: calculate or look up volume requirements in patients at higher risk to avoid illness caused by the collection. Pediatric volume calculation has its own knowledge statement at k83.

  • B — Maximising volume is the opposite of the concern for an at-risk patient.
  • C — Tube selection follows the test ordered, not the patient's age.
  • D — Inversion counts come from the tube manufacturer and are unrelated to patient volume.

Concept being tested

12 of the 100 scored items. Blood culture collection including skin preparation, equipment, volume requirements and the order of draw for cultures; assisting with pediatric, geriatric, non-tunneled and tunneled line collections; metabolic screening for conditions such as PKU and galactosemia; blood donation phlebotomy and the donor standards; volume limits for at-risk patients; non-blood specimen collection; point-of-care testing; tolerance tests; blood alcohol collection and its skin preparation; and drug screening. — 12% of the exam. Study guide for Special Collections.

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Primary references

  1. NHA Certified Phlebotomy Technician (CPT) — Test Plan for the CPT Exam — National Healthcareer Association (NHA) · primary · retrieved 2026-09-22, verified 2026-09-22
Last reviewed: 2026-10-07Reviewed by: Maria Torres, CPT, RMA (AMT), Clinical laboratory educator & venipuncture safety reviewHow we verify facts