October 18, 2026
Phlebotomy Exam (NHA CPT) Content Outline: 5 Domains and Weights
The complete NHA CPT exam content outline — all 5 domains, their exact weights, and the specific topics tested within each, based on the same blueprint CertPrepAcademy uses for its 500-question bank.
Why the Content Outline Matters
The NHA publishes an official content outline for the CPT exam — a breakdown of exactly which domains are tested and how heavily each one counts toward your score. Studying without this blueprint means spending equal time on a domain worth 12% of the exam and one worth 28% — a bad trade when your study time is limited.
CertPrepAcademy's 500-question practice bank is built to match this exact blueprint: the proportion of questions in each domain mirrors the real exam's weighting, so practicing the full bank automatically gives you the right amount of exposure to each area.
Domain 1: Routine Blood Collections — 28%
The largest domain, covering the core mechanics of venipuncture and capillary collection:
• Equipment selection and quality checks for the evacuated tube system (needle, holder/adapter, vacuum tube)
• Tourniquet application
• Site selection and palpation
• Antisepsis technique
• Venipuncture procedure, start to finish
• Order of draw for multiple-tube collections
• Complications — hematoma, hemolysis, nerve injury — and how to recognize and manage them
• Needle safety (safety-engineered device) requirements
• Tube inversion requirements by additive type
• Dermal/capillary puncture technique
• Post-procedural care
• Specimen labeling at the bedside
Domain 2: Safety and Compliance — 26%
The second-largest domain, covering the regulatory and safety framework every phlebotomist works under:
• OSHA and NIOSH workplace safety regulations
• HIPAA and protected health information (PHI)
• Scope of practice and professional ethics
• Quality control for lab and point-of-care equipment
• Sharps and biohazard disposal
• The Bloodborne Pathogens Standard and exposure control plans
• Transmission-based precautions
• Personal protective equipment (PPE) and hand hygiene
• Emergency response procedures
• Documentation requirements
Domain 3: Patient Preparation — 20%
Covers everything that happens before the needle goes in:
• Patient identification and informed consent
• Requisition and order verification
• Cultural competence and patient communication
• Testing requirements — fasting windows, timed collections
• Tube selection
• Site selection
• Patient positioning
• Non-blood specimen collection instructions
• EMR/EHR documentation
Domain 4: Processing — 14%
Covers what happens to the specimen after collection:
• Specimen preparation — centrifuging and aliquoting
• Specimen integrity and handling requirements (temperature, light sensitivity, time limits)
• Chain of custody
• Lab information systems
• Critical value recognition and reporting
• Result distribution
• Patient re-collection procedures
Domain 5: Special Collections — 12%
The smallest domain, but one candidates frequently underprepare for since it covers less routine scenarios:
• Blood culture collections (rigorous antisepsis, specific technique)
• Assisting with pediatric, geriatric, and line-based collections
• Metabolic and newborn screening
• Blood donation phlebotomy
• Pediatric volume calculations
• Non-blood specimen collection
• Point-of-care testing
• Tolerance tests (e.g., glucose tolerance)
• Blood alcohol collection and drug screening (chain-of-custody rules apply here too)
| Domain | Weight | Questions in a 100-Q Full Test |
|---|---|---|
| Routine Blood Collections | 28% | ~28 |
| Safety and Compliance | 26% | ~26 |
| Patient Preparation | 20% | ~20 |
| Processing | 14% | ~14 |
| Special Collections | 12% | ~12 |
How CertPrepAcademy Uses This Blueprint
CertPrepAcademy's 500-question phlebotomy bank is split across these 5 domains in the exact proportions above — 130 Safety and Compliance questions, 100 Patient Preparation, 140 Routine Blood Collections, 60 Special Collections, and 70 Processing. That means a full 100-question practice test pulls questions in roughly the same ratio as the real exam, and the topic quizzes let you drill any single domain in isolation if your diagnostic results show a weak spot.
CTA → /phlebotomy/test (full practice test matching this blueprint)
CTA → /phlebotomy/guide (study guides organized by these same 5 domains)
Does NHA publish this content outline officially?
Yes. NHA publishes a detailed test plan / content outline for the CPT exam that lists each domain, its weight, and the specific tasks and knowledge areas tested within it. The breakdown above reflects that published structure. Always check nhanow.com for the current version before your exam, since content outlines are periodically revised.
Which domain should I study first?
Start with Routine Blood Collections (28%) and Safety and Compliance (26%) — together they're more than half the exam, and Routine Blood Collections is the foundation that Special Collections (which covers variations on routine technique, like blood cultures and pediatric draws) builds on. Save Special Collections for last since it assumes you already know routine venipuncture cold.
Related Pages
Put this knowledge to the test
Free phlebotomy practice tests, study guides, and flashcards — all 5 NHA CPT exam domains.
Take a Free Phlebotomy Practice Test →More Study Guides
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