1.2 Exam Structure & the Nine-Subject Blueprint

How the PA-CAT Is Built

The PA-CAT is a single-best-answer multiple-choice examination: every item presents a stem (a question or incomplete statement) followed by four answer options, exactly one of which is the keyed (correct) response. There are no select-all-that-apply items, no fill-in-the-blank items, and no short-answer items. Distractors are written to be plausible and content-reasoned, so a candidate who has only partial knowledge is drawn toward an attractive but incorrect choice. Items are presented randomly across the nine subjects during the exam — you do not answer all Anatomy items in one block, then all Chemistry items in the next. The exam does not label which subject a given item belongs to, so you must be prepared to switch cognitive contexts quickly from one item to the next.

The Nine-Subject Blueprint (Bulletin Table 2)

The content outline is fixed in the PA-CAT Bulletin of Information, rev. 20240815, Table 2. The nine subjects, their weights, and approximate item counts on the 240-item form (200 scored + 40 pretest) are:

The three 16% cores — Anatomy, Physiology, and Chemistry — together account for 48% of all items (about 116 of 240, roughly 96 of the 200 scored items), so they deserve the largest share of your study time. The three 11% life-science subjects — General Biology, Microbiology, and Genetics — add another 33%, and the two 5% quantitative subjects (Biochemistry, Statistics) plus 9% Behavioral Sciences round out the form. Note the item counts are approximate because each operational form is assembled from a pool and the exact count per subject can vary by one or two while the percentages stay fixed.

The 40 Unscored Pretest Items

Of the 240 total items, 40 are unscored pretest (field-test) items. These are indistinguishable from scored items in appearance and difficulty; they are interspersed throughout the exam to gather psychometric data (item difficulty, discrimination, and differential item functioning) before being promoted to scored status on future forms. You cannot identify pretest items with confidence, so you must treat every item as if it counts. The 4-hour clock runs continuously across all 240 items; there is no separate pretest section and no way to skip experimental questions.

Cognitive Levels (Bulletin Table 1 — Bloom's)

The PA-CAT also classifies every item by cognitive level using a Bloom's-style taxonomy. The Bulletin's Table 1 reports the following distribution, shown below as a proportion of all items:

chartType: pie
data: [{"name":"Application","value":54},{"name":"Comprehension","value":25},{"name":"Knowledge","value":12},{"name":"Analysis","value":9}]
title: PA-CAT Cognitive Level Distribution (Bulletin Table 1)

Application dominates at 54%, meaning most items require you to use knowledge in a new context — applying a physiological relationship to a clinical scenario, using a statistical formula on a data set, or predicting the outcome of a genetic cross. Comprehension at 25% asks you to explain, interpret, or summarize — reading a data table and identifying what it shows, or restating a mechanism in your own words. Knowledge at 12% is straightforward recall of facts, definitions, and structures. Analysis at 9% is the most demanding: breaking down a system into parts, distinguishing relevant from irrelevant variables, or diagnosing why a mechanism produces a specific outcome. The practical implication: rote memorization alone is insufficient for roughly 88% of the exam. You must be able to apply and interpret what you know.

How Forms Are Constructed and Maintained

Each operational PA-CAT form is built to the content and cognitive blueprint above using a calibrated item pool. Forms are assembled to be statistically equivalent so that a scaled score means the same level of ability regardless of which form a candidate receives. New items are continuously written, reviewed by subject-matter experts (including PA faculty), field-tested as pretest, and only promoted to scored status after acceptable psychometric performance. The content outline itself is reviewed annually against current PA curricula and refreshed when practice-analysis data warrant, ensuring the blueprint tracks what PA programs actually teach in the first year.

Because forms are equivalent rather than identical, you should not expect any single topic list to predict your exact items. Study the blueprint, not memorized predictions: if a domain is 16% of the exam, treat it as roughly one in six scored items and prepare accordingly. Likewise, because items are randomized rather than blocked by subject, your practice should mix subjects within a single sitting so you train the context-switching the live exam demands. A candidate who only studies Anatomy in 40-minute blocks will struggle when an Anatomy item is immediately followed by a Statistics item under timed conditions; mixed practice from early in your preparation prevents that shock.

Finally, because 40 of 240 items are unscored, you should resist the common impulse to guess which items are experimental and mentally disengage from them. The only safe assumption is that every item counts. Budget roughly one minute per item across the 4-hour window, leave no item blank (there is no penalty for guessing on single-best-answer items), and flag for review only those items you want to revisit if time permits.