Sources and credits
Every question, flashcard, lesson, cheat sheet and glossary entry cites where its facts come from: 651 sources so far. All text was written for Phlebotomy Tech Prep: CPT; no text, tables or images were copied from these sources. Citing a source does not mean its publisher reviewed or endorses Phlebotomy Tech Prep: CPT.
Most-cited publishers
| Publisher | Sources cited |
|---|---|
| MedlinePlus (U.S. National Library of Medicine) | 126 |
| PubMed Central (U.S. National Library of Medicine) | 83 |
| OpenStax (Rice University) | 82 |
| U.S. Government Publishing Office (govinfo) | 48 |
| Occupational Safety and Health Administration | 35 |
| Labcorp | 34 |
| Electronic Code of Federal Regulations (eCFR), National Archives and U.S. Government Publishing Office | 23 |
| Diagnostic Laboratory of Oklahoma (DLO, a Quest Diagnostics joint venture) | 19 |
| Centers for Medicare & Medicaid Services | 12 |
| Merck Manuals (Merck & Co.) | 12 |
| U.S. National Library of Medicine | 11 |
| World Health Organization | 11 |
| Texas Department of State Health Services | 8 |
| National Archives, eCFR | 7 |
| National Cancer Institute (NIH) | 7 |
Exam facts
Exam structure: NHA’s published CPT test plan (2024 job analysis) and CPT exam FAQ. Exam rules: NHA’s Candidate Handbook (updated June 1, 2026), NHA’s CPT page, renewal page and update log, and NHA’s 2024 pass-rate report. Domain names, counts and rules are facts about the exam; the wording and layout of NHA documents are not reproduced. Every fact was checked on October 26, 2026.
| Fact | Source |
|---|---|
| Questions, pretest questions, time | NHA CPT test plan, p.1; NHA CPT page |
| Domains and question counts | NHA CPT test plan, pp.1–2 |
| Launch of the current exam, no pilot scoring | NHA CPT exam FAQ, p.1 |
| Question type and delivery | NHA Candidate Handbook, p.24 |
| Pretest questions, ID rules, one session | NHA Candidate Handbook, p.25 |
| Calculator, breaks, scratch materials, prohibited items | NHA Candidate Handbook, pp.25–26; NHA update log (June 2026) |
| Ways to test | NHA Candidate Handbook, p.14; NHA CPT page |
| Eligibility, pathways, 30 venipunctures and 10 capillary sticks | NHA Candidate Handbook, pp.6–8 and p.10; NHA CPT page |
| Provisional certification (18 months from October 1, 2026) | NHA update log (October 2026); NHA CPT page; NHA Candidate Handbook, p.11 and p.38 |
| Registration | NHA Candidate Handbook, pp.13–15 |
| Rescheduling, refunds, accommodations | NHA Candidate Handbook, pp.21–23 |
| Scaled scores 200–500, passing score 390 | NHA Candidate Handbook, pp.31–32; NHA 2024 pass rates |
| Cut score method | NHA Candidate Handbook, p.43 |
| Results, score report, appeals | NHA Candidate Handbook, pp.32–34 |
| Retake policy | NHA Candidate Handbook, p.34 |
| Certificate | NHA Candidate Handbook, p.31 and p.35 |
| Renewal, CE credits, grace period, reinstatement | NHA Candidate Handbook, pp.35–38; NHA renewal page |
| 2024 pass rate and exams given | NHA 2024 pass rates (revised January 8, 2025), p.1 |
Photographs
Photographs of phlebotomy supplies from Wikimedia Commons, cropped and resized for this site. They show the work in general, not this app.
- “Drawing Test tubes different colors” by Goldmund100, CC BY-SA 3.0, via Wikimedia Commons. Our crop is shared under the same licence.
- “Vacutainer with blood collection tube” by Whispyhistory, CC BY 3.0, via Wikimedia Commons.
- “Blood collection renal function test tube” by Fumikas Sagisavas, CC0 1.0, via Wikimedia Commons.
- “Vacutainer tubes” by Håkan Dahlström, CC BY 2.0, via Wikimedia Commons.
App screens on the home page are from the app’s own design.
Reference sources
- OpenStax textbooks (Rice University) are cited as sources of facts, with links to the chapters. No OpenStax text or images are reproduced in this app. OpenStax does not endorse Phlebotomy Tech Prep: CPT.
- MedlinePlus is a service of the U.S. National Library of Medicine. Links to MedlinePlus pages do not imply endorsement.
- World Health Organization guidelines are cited and linked. WHO does not endorse Phlebotomy Tech Prep: CPT.
- Merck Manuals and other copyrighted references are cited for facts only; no text or images are reproduced.
- CLSI standards are cited from CLSI’s public summaries. CLSI does not endorse Phlebotomy Tech Prep: CPT.
Design
- Geist typeface by Vercel, used under the SIL Open Font License 1.1 (license text).
- Icons and the tube mark: drawn for Phlebotomy Tech Prep: CPT.
Trademarks
Phlebotomy Tech Prep: CPT is an independent study app. It is not affiliated with, endorsed by, or sponsored by the National Healthcareer Association (NHA). NHA and Certified Phlebotomy Technician (CPT) are trademarks of the National Healthcareer Association. They are used here only to describe the exam this app helps you prepare for. CPT here means NHA's Certified Phlebotomy Technician credential, not Current Procedural Terminology (CPT®), a registered trademark of the American Medical Association.
Apple, App Store, iPhone and iCloud are trademarks of Apple Inc.
Important
Phlebotomy Tech Prep: CPT is for exam study only. It is not medical advice and does not replace your training program, your employer’s protocols, your scope of practice or the instructions of a licensed provider. Laws, guidelines and product instructions change; always follow the current version that applies where you work.
Practice questions, flashcards and lessons were created for Phlebotomy Tech Prep: CPT. They are not actual exam questions and do not come from NHA. We do not guarantee that you will pass the CPT exam.