About this test
Order Entry and Processing is Domain 4 of the PTCE at 22.5% of the 2026 exam. It's the workflow domain: taking a prescription from intake to a correctly labeled, correctly billed product.
This quiz covers the outline's full list: formulas, calculations, ratios, proportions and 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; and identifying and returning dispensable, non-dispensable and expired medications.
New to the material? Work through our 2026 PTCB study guide first, then reinforce it with the full pharmacy abbreviations reference.
What's in the question bank
| Topic | Questions in bank |
|---|---|
| Sig Codes | 10 |
| Days Supply | 9 |
| Billing | 8 |
| Daw Codes | 5 |
| Intake Data Entry | 4 |
| Rx Labels | 3 |
| Refills | 3 |
| Auxiliary Labels | 3 |
Key concepts to know
Sig codes are free points
1 tab PO BID = one tablet by mouth twice daily. Sig questions are among the most predictable on the exam, so drill until translation is automatic, including the tricky ones: AC (before meals), HS (at bedtime), gtt (drop), and Roman numerals.
Days supply drives everything
Quantity ÷ daily use = days supply. Insulin, inhalers, and eye drops complicate it: you must convert units, actuations, or drops into days. These multi-step versions are exactly what the exam tests.
NDC anatomy
The National Drug Code has three segments: labeler-product-package (e.g., 5-4-2 in an 11-digit billing format). Know what each segment identifies and why billing systems pad to 11 digits.
Order Entry Quiz: FAQ
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.
Are calculations part of this domain?
Yes, the outline places formulas, ratios, proportions, conversions, and dilution calculations in Domain 4. If math is your weak spot, pair this quiz with our dedicated Pharmacy Math practice test.
Official sources checked
This quiz's content and explanations are built from and cross-checked against primary sources. Verify current exam facts directly with PTCB.