Patient Safety and Quality Assurance
Identifying High-Alert and LASA Medications
Recognizing medications that carry a high risk of serious harm if an error occurs, and drug pairs that look or sound alike — a core Patient Safety & Quality Assurance task.
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
Know the categories of high-alert medications: these carry a heightened risk of significant patient harm when used in error, even though the error itself may be no more likely than with any other drug — examples include insulin, anticoagulants (e.g., warfarin, heparin), opioids, and concentrated electrolytes.
- 2
Recognize common look-alike/sound-alike (LASA) pairs by sight and by name before pulling stock — e.g., hydroxyzine vs. hydralazine, clonidine vs. klonopin (clonazepam), Celebrex vs. Celexa.
- 3
Use Tall Man lettering cues where your pharmacy system displays them (e.g., hydrOXYzine vs. hydrALAzine) as a deliberate visual check, not just a formatting detail to skim past.
- 4
Physically separate high-alert and LASA-paired products on the shelf where your pharmacy's layout allows it, and double-check the product in hand against the order before counting.
- 5
Involve the pharmacist for an independent check on any high-alert medication fill, per your pharmacy's SOP — these typically require verification beyond the technician's initial check.
Quality Checkpoints
- ✓
High-alert medications are identified as such and routed through any extra verification step your pharmacy requires.
- ✓
LASA pairs are checked by reading the full name, not a glance at the first few letters.
- ✓
Tall Man lettering, when present, is read and used as an active cross-check, not ignored.
Common Mistakes
- ⚠
Grabbing a bottle based on a quick glance at the first syllable of the drug name — this is exactly how LASA errors happen.
- ⚠
Treating "high-alert" as a label rather than a trigger for an actual extra verification step.
- ⚠
Not recognizing that a drug can be ordinary-risk in one form/strength and high-alert in a concentrated or injectable form (e.g., concentrated electrolyte solutions).
On-the-Job Tips
- →
When pulling stock for a drug you know has a LASA counterpart, say the full name to yourself out loud before counting — this small habit catches more errors than people expect.
- →
Keep a personal mental list of the LASA pairs you've seen confused at your own pharmacy — these patterns tend to repeat with specific stock placement or handwriting styles.
Also study the exam domain
The written PTCE tests the knowledge behind this task in multiple-choice format — use the study guides to reinforce it.
Browse All PTCE Study Guides →Practice the written exam
Free practice questions with instant feedback and explanations.
Take a Practice Test →