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MACE Cheat Sheet

A fast reference for the MACE — the highest-yield facts to review before test day. It covers the six rights, the exam’s three content areas, and abbreviations you are likely to see in questions.

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  • 💡 Key Takeaways — the one transferable rule per question
  • 🔍 Hint highlights — the decisive cue phrases in each stem
  • 📖 Full rationales — why every option is right or wrong

Every MACE question is written to the current exam outline for quick learning and a clear pass strategy.

Written and reviewed by the LexPort exam-prep team, led by our Founder & Exam-Prep Lead. LexPort builds certification practice questions — this is exam-preparation material, not medical advice. Last reviewed August 2026.

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The six rights of medication administration

Right patient, right medication, right dose, right route, right time, and right documentation. Most administration questions come back to one of these six.

The MACE at a glance

Sixty questions (50 scored + 10 unscored pretest), 120 minutes. Content areas: Medication Administration, Observation & Reporting (60%), Medication Concepts & Measurements (24%), and Authorized Duties (16%).

Common abbreviations

PO (by mouth), PRN (as needed), BID (twice a day), TID (three times a day), QID (four times a day), ac (before meals), pc (after meals), HS (at bedtime). Read every order carefully — a misread abbreviation is a medication error.

Scope reminders

A medication aide does not give the first dose of a new medication, and stops to involve the nurse whenever a situation is outside the aide’s authorized duties.

Test yourself: 3 MACE practice questions

Tap an answer for instant feedback and the full rationale.

Question 1

A resident is prescribed a new oral antibiotic for a urinary tract infection. The pharmacy has just delivered the medication. The delegating nurse is currently on a meal break. What is the Medication Aide's (MA-C) most appropriate action?

Why A is the answer

Waiting for the delegating nurse to return is correct because national standards dictate that a licensed nurse must administer or specifically assess and authorize the first dose of any new medication. Administering the medication immediately is tempting to provide prompt care, but it violates scope of practice; MA-Cs cannot give the first dose of a new medication because the resident must be monitored for initial allergic reactions or adverse effects by a nurse. Calling the pharmacy to verify instructions is tempting as a safety check, but the MA-C still cannot administer a first dose, regardless of pharmacist clarification. Asking another MA-C to double-check the label is a good general safety practice for routine meds, but two MA-Cs cannot bypass the rule requiring a nurse for a first dose.

Question 2

Mr. Alvarez tells the Medication Aide (MA-C) he has a mild headache. His MAR shows an active, nurse-delegated order: 'Acetaminophen 500 mg PO every 4 hours PRN for mild pain.' His last dose was 6 hours ago, and he has no other acetaminophen orders. What should the MA-C do?

Why B is the answer

Correct — the PRN order has clear objective parameters (mild pain, every 4 hours), the 6-hour interval is satisfied, and administering a delegated PRN within its stated parameters is in the MA-C's scope. The aide observes the resident and documents afterward. Over-cautious: the nurse already set the parameters when delegating this order, so no further authorization is needed for a clear, in-parameter request. Rating the pain and judging whether it 'qualifies' is a clinical assessment beyond the aide's role — the order's parameters already define eligibility. This order does not require vital signs, and letting them gate the dose turns a simple administration into an assessment the aide should not perform.

Question 3

According to national Medication Aide (MA-C) scope of practice standards, which of the following medication routes is strictly prohibited for the MA-C to administer?

Why C is the answer

An intramuscular injection is correct as the prohibited route; MA-Cs are strictly forbidden from administering medications via invasive routes, including IM, IV, and subcutaneous injections. A transdermal patch is a topical route, which is routinely permitted within the MA-C scope of practice. A metered-dose inhaler is an inhaled route, which MA-Cs are trained and authorized to administer. A vaginal suppository is a permitted route for an MA-C under standard delegation guidelines.

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