Verifying a Prescription Order

Checking NDC numbers, lot numbers, and expiration dates against the order before dispensing — foundational quality-control steps covered across Order Entry & Processing and Patient Safety & QA.

5 steps·4 quality checkpoints·3 common mistakes

Note:the PTCE has no hands-on or oral evaluation component — this guide describes the real on-the-job task so you understand the knowledge the written exam tests, not a skills test you'll be scored on in person.

Step-by-Step Procedure

1
Confirm the prescriber, patient, drug, strength, dosage form, and quantity on the order are all internally consistent (e.g., quantity makes sense for the dosage form — don't fill "90" for a drug normally dispensed as a single inhaler).
2
Match the NDC on the physical product to the NDC entered in the system — NDC format is a 10-digit number (commonly displayed as 11 digits with padding) split into three segments: labeler code, product code, and package code.
3
Check the lot number on the product and confirm it's recorded if your pharmacy's workflow requires lot tracking (standard for certain classes, like compounded or recalled-prone products).
4
Check the expiration date on the product; never select stock that will expire before the patient is expected to finish the prescribed course.
5
If anything doesn't reconcile — wrong strength in stock, NDC mismatch, near-expired product — set the fill aside and flag it rather than forcing it through.

Quality Checkpoints

✓
NDC match is done at the number level, not just drug-name-and-strength.
✓
Expiration date gives the patient a reasonable margin past the expected end of therapy.
✓
Lot number is documented wherever the pharmacy's SOP requires it.
✓
Discrepancies are flagged, not resolved by assumption.

Common Mistakes

⚠
Assuming two bottles with the same drug name and strength are interchangeable without checking the NDC — different manufacturers and package sizes have different NDCs, which matters for insurance billing and recall tracking.
⚠
Reading an expiration date as month/day instead of month/year or vice versa under time pressure.
⚠
Not re-checking the order after an interruption (phone call, question from another coworker) — resuming from memory instead of re-reading the order is a common source of errors.

On-the-Job Tips

→
Build the habit of checking NDC, lot, and expiration as one continuous motion each time you pick up a stock bottle — not as three separate afterthoughts.
→
If you're interrupted mid-fill, re-verify from the start rather than trying to remember where you left off.

Verifying a Prescription Order

Step-by-Step Procedure

Quality Checkpoints

Common Mistakes

On-the-Job Tips

More on This Task

Practice the written exam