PTCB Order Entry & Processing
Domain 4 of the PTCE · 22.5% of the 2026 exam · updated
Order Entry and Processing is Domain 4 of the PTCE at 22.5% of the 2026 exam. It is the workflow domain: taking a prescription from intake to a correctly labeled, correctly billed product. This guide maps what gets tested to the free quizzes that drill it.
It is also where most of the exam's calculations live, so if math is your weak spot, this domain is worth extra time. The good news: calculations are the most learnable questions on the whole exam.
Share of the 90-question exam by knowledge domain, per the official content outline effective January 6, 2026.
- Medications 35% (about 31 questions)
- Patient Safety & Quality Assurance 23.75% (about 21 questions)
- Order Entry & Processing 22.5% (about 20 questions)
- Federal Requirements 18.75% (about 17 questions)
What gets tested in this domain
Per the official PTCE content outline effective January 6, 2026, this domain covers:
- Formulas, calculations, ratios, proportions, and unit conversions
- Sig codes, abbreviations, and medical terminology
- Days supply, quantity, dose, and dilution determinations
- Equipment and supplies for drug administration
- Lot numbers, expiration dates, and NDC numbers
- Identifying and returning dispensable, non-dispensable, and expired medications
Practice each part of this domain
| Subtopic | Practice it |
|---|---|
| Full Order Entry domain | Order Entry Quiz |
| Calculations | Pharmacy Math Practice |
| Sig codes and abbreviations | Abbreviations Quiz |
Sample questions from this domain
These are real, source-cited questions from our bank. For a scored, timed run, take the Order Entry & Processing Quiz.
1. A new prescription reads: "Amoxicillin 500 mg, i cap PO BID x 10 days." Which set of patient directions correctly translates this sig?
- A. Take one capsule by mouth once daily for 10 days
- B. Take two capsules by mouth once daily for 10 days
- C. Take one capsule by mouth twice daily for 10 days ✓
- D. Take one capsule by mouth every other day for 10 days
Answer: C. PO means by mouth and BID means twice daily, so the patient takes one capsule by mouth two times each day. The Roman numeral i indicates one capsule per dose, and the course length of 10 days comes directly from the sig.
2. The abbreviation AC in a prescription sig instructs the patient to take the dose at what time?
- A. Before meals ✓
- B. After meals
- C. At bedtime
- D. In the morning
Answer: A. AC comes from the Latin ante cibum and means before meals. It is commonly seen on medications such as sulfonylureas or rapid-acting insulins that work best when taken shortly before eating, while PC (post cibum) is the abbreviation for after meals.
3. A technician is entering a prescription for timolol 0.5% ophthalmic solution with the sig "1 gtt OS BID." How should the directions read on the label?
- A. Instill 1 drop in the right eye twice daily
- B. Instill 1 drop in the left eye twice daily ✓
- C. Instill 1 drop in each eye twice daily
- D. Instill 1 drop in the left ear twice daily
Answer: B. OS designates the left eye, gtt means drop, and BID means twice daily. OD would indicate the right eye and OU each eye, while the ear abbreviations use A (AD, AS, AU), so confusing these letters would send the drug to the wrong site.
Keep studying Order Entry & Processing
Frequently asked questions
What is Domain 4 on the PTCE?
Order Entry and Processing: 22.5% of the 2026 exam. It covers calculations and sig codes, administration equipment and supplies, lot/expiration/NDC numbers, and return procedures for medications and supplies.
How much math is in this domain?
The outline places formulas, ratios, proportions, conversions, and dilution calculations in Order Entry. Expect several calculation questions here, which is why the pharmacy math quiz pairs naturally with this domain.
Official sources
PTCB Quiz Prep is an independent study resource, not affiliated with the Pharmacy Technician Certification Board. Verify current exam facts with PTCB. See our editorial standards.