Four domains, their exact weights, and what each one actually asks — PTCB Content Outline v1.4, effective 6 January 2026
The exam is not an undifferentiated pile of pharmacy knowledge. It is four domains with published weights, and knowing where the points sit tells you where your study time is worth most.
| Domain | Weight | What it covers |
|---|---|---|
| 1. Medications | 35% | Generic and brand names and drug classes; therapeutic duplication and DUR; interactions and contraindications; dosage forms and routes; side effects and allergies; indications and black-box warnings; stability and beyond-use dating; storage. |
| 2. Patient Safety and Quality Assurance | 23.75% | High-alert medications and look-alike/sound-alike pairs; error-prevention strategies such as tall-man lettering and barcode scanning; issues requiring pharmacist intervention; event reporting (MedWatch, ISMP MERP); types of prescription error; infection control and cleaning. |
| 3. Order Entry and Processing | 22.50% | Calculations, sig codes, abbreviations and medical terminology; equipment and supplies; NDC numbers, lot numbers and expiration versus beyond-use dating; returns, reverse distribution and pharmaceutical waste. |
| 4. Federal Requirements | 18.75% | Hazardous drug handling and USP <800>; controlled-substance schedules and prescribing rules; the controlled-substance lifecycle; restricted programs and REMS; FDA recall classes; DSCSA. |
Medications is more than a third of the exam, and it is the domain where recognition does most of the work: brand to generic, generic to class, class to what it treats. That is a memorisation problem with a shortcut — most of the list follows naming patterns, so learning the suffix families collapses a few hundred separate facts into about twenty rules, and then the full Top 200 index is revision rather than learning.
Federal Requirements is the smallest domain and the cheapest to finish. It is almost pure recall — numbers, forms and schedules — so it responds to a single concentrated evening in a way that Medications never will. The controlled-substance rules are set out here.
Order Entry is where arithmetic mistakes live. The calculations are a short, closed list of setups — conversions, days’ supply, percent strength, dilution (C1V1 = C2V2) and alligation. Once you can name the setup, the arithmetic is rarely what fails you; writing the units on every line and cancelling them catches most of the rest.
Patient Safety is the domain people skim and then lose points on, because it looks like common sense until the question turns on a specific high-alert drug or a specific reporting route.
Outline v1.4 took effect on 6 January 2026. Study material written before that can be subtly out of date on details rather than obviously wrong — which is the harder kind to notice. Check the edition before you trust a number.