What's on the ASCP PBT exam.

Five domains, 100 questions, 2.5 hours, 68% to pass. The orientation lesson — what to expect on test day and how to weight your study time.

The format, in one paragraph

The ASCP BOC Phlebotomy Technician (PBT) certification exam is a computer-based test of 100 multiple-choice items, delivered at Pearson VUE testing centers, with a two-and-a-half-hour time limit. The passing standard is criterion-referenced, set at roughly 68%. Items are domain-weighted to reflect the relative importance of each content area in everyday clinical phlebotomy.

The five domains, with weights

• Specimen Collection — 28%. Tube selection, additives, order of draw, site selection, pediatric and geriatric technique. The single largest section. Cover this first.
• Processing & Handling — 22%. Centrifugation, time and temperature limits, aliquoting, rejection criteria. Most-rejected-specimen reasons live here.
• Patient Care — 17%. Two-identifier verification, difficult-draw strategies, patient-position rules, fainting and reactions.
• Safety & Compliance — 17%. OSHA bloodborne pathogens, PPE, sharps handling, HIPAA basics, incident reporting.
• Non-Blood Specimens — 16%. Capillary draws, urine, buccal swabs, specimen integrity across sample types.

Translation: Specimen Collection plus Processing & Handling together account for half the exam. If you optimize study time, weight your sessions accordingly.

What this lesson is, and what it isn't

This lesson is the orientation. The next 23 lessons each take one piece of one domain and teach it deeply, with cited sources, key takeaways, and the kind of question your examiner is most likely to ask. Treat this page as your map; treat the rest as the road.

Standards reference: ASCP Board of Certification PBT content guideline. Domain percentages reflect the current published content outline. PhlebotomySkills.com is exam-preparation content. Not a degree, not for-credit coursework, and not affiliated with any certifying body.