Pass the PTCB CPhT PTCE Questions and answers with ExamsMirror

Alot numberis a unique identifier assigned to a specific batch of a medication during manufacturing.

TheNational Drug Code (NDC)andserial numberare different from the lot number.

On medication stock bottles, the lot number is often preceded by"(10)", which is present in this case:

(10)ABC123→This represents the lot number.

B. 55555444422→ This appears to be aGTIN (Global Trade Item Number), which identifies the product but is not the lot number.

C. 051526→ This could represent a manufacturer’s internal code or part of the packaging details, but not the lot number.

D. 11262026→ This follows the(21) identifier, which represents theexpiration date (November 26, 2026).

PTCB PTCE Exam Content Outline – Medication Labeling and Lot Numbers

FDA Drug Supply Chain Security Act (DSCSA)– Provides guidance on tracking drug batches.

USP Chapter <1079> Good Storage and Distribution Practices– Covers stock bottle labeling and identification.

Why Other Answers Are Incorrect?Pharmacy Technician References:

Cefdinir is a third-generation cephalosporin antibiotic commonly used to treat bacterial infections, including otitis media (middle ear infection) in children. It is available in both capsule and suspension forms. However, cefdinir suspension is supplied in different concentrations, typically125 mg/5 mLand250 mg/5 mL.

The prescription provided specifies"Cefdinir suspension 5 mL PO q12h x 10 days", but it does not mention the concentration (strength) of the suspension. Without this crucial information, the pharmacy cannot accurately determine the total dosage the patient will receive. Different strengths would result in significantly different amounts of cefdinir per dose.

For example:

If the prescriber intended125 mg/5 mL, then the patient would receive125 mg per dose (250 mg daily).

If the prescriber intended250 mg/5 mL, then the patient would receive250 mg per dose (500 mg daily).

This discrepancy could lead tounderdosing or overdosing, making it essential for the pharmacy to contact the prescriber to confirm the correct concentration before dispensing.

A. Cefdinir is not available as a suspension.→ Incorrect. Cefdinir is available inoral suspensionform, typically in 125 mg/5 mL and 250 mg/5 mL concentrations.

C. Cefdinir suspension is not indicated for otitis media.→ Incorrect. Cefdinir is FDA-approved for the treatment of otitis media in pediatric patients.

D. Cefdinir suspension was prescribed for a child old enough to swallow capsules.→ Incorrect. While some 8-year-old children may be able to swallow capsules, many pediatric patients prefer liquid formulations, and prescribers often choose suspensions for better compliance.

PTCB PTCE Exam Content Outline – Medication Order Entry and Fill Process(Ensuring accuracy of prescriptions, including strength and formulation).

FDA Drug Label for Cefdinir– Indicates available strengths and dosing requirements.

Lexicomp Drug Information for Cefdinir– Lists the recommended pediatric dosages and available suspension concentrations.

Pharmacology Textbooks (e.g., "Mosby’s Pharmacy Technician: Principles and Practice")– Reinforce the importance of verifying missing prescription details before dispensing.

Why the Other Answer Choices Are Incorrect:Pharmacy Technician References:

Oxaprozinis anonsteroidal anti-inflammatory drug (NSAID)used to treat arthritis. It is listed on theISMP (Institute for Safe Medication Practices) List of Confused Drug Namesdue to its similarity toTopamax (topiramate), an anticonvulsant used for epilepsy and migraine prevention. The confusion arises because both drug nameslook and sound similar, which can lead to dispensing errors.

A. Tobradex→ Incorrect. Tobradex is anantibiotic/steroid ophthalmic medicationand is not confused with oxaprozin.

C. Tradjenta→ Incorrect. Tradjenta (linagliptin) is aDPP-4 inhibitor for diabetesand is not commonly confused with oxaprozin.

D. Trileptal→ Incorrect. Trileptal (oxcarbazepine) is ananticonvulsantbut is not on the ISMP Confused Drug List with oxaprozin.

Incorrect Answer Choices:Pharmacy Technician References:

PTCB PTCE Exam Content Outline (Error Prevention and Look-Alike/Sound-Alike (LASA) Drugs)

Institute for Safe Medication Practices (ISMP) List of Confused Drug Names

FDA Drug Safety Communications

Mosby’s Pharmacy Technician Exam Review

TheM-M-R II (Measles, Mumps, and Rubella) vaccinemust bereconstituted only with the manufacturer-supplied diluentto maintain its efficacy and stability.

The manufacturer-provided diluent contains stabilizing agents that preserve the live attenuated virus.

Using normal saline can alter the pH and degrade the vaccine, making it ineffective.

The vaccine must be discarded if reconstituted incorrectlyand not administered.

A. Administer the vaccine as the diluents are equivalent.❌→Incorrect

Normal saline is NOT equivalent to the manufacturer’s diluentand can compromise the vaccine’s potency.

B. Report the incident to the Drug Enforcement Administration (DEA).❌→Incorrect

Vaccine errors should be reported to the CDC’s Vaccine Adverse Event Reporting System (VAERS), not the DEA(which handles controlled substances, not vaccines).

C. Contact the Environmental Protection Agency (EPA) for guidance.❌→Incorrect

The EPA regulates hazardous waste, not vaccine errors.The CDC or vaccine manufacturer should be contacted for guidance.

CDC Vaccine Storage and Handling Guidelines– States thatvaccines must be reconstituted only with manufacturer-supplied diluents.

FDA Guidelines for M-M-R II Vaccine– Confirms that improper reconstitutionrenders the vaccine ineffective.

PTCB PTCE Exam Content Outline– Covers proper vaccine handling and error prevention.

Why Is Normal Saline Not an Acceptable Diluent?Why Not the Other Options?Key References:

Aricept (Donepezil) is a cholinesterase inhibitorused for treatingmild, moderate, or severe Alzheimer's disease dementia.

Itworks by increasing acetylcholine levels in the brain, improving memory and cognitive function.

FDA-approved for all stages of Alzheimer’s disease.

B. Azilect❌→Used for Parkinson’s disease, not Alzheimer's.

Azilect (Rasagiline) is a monoamine oxidase-B (MAO-B) inhibitorthat helps manage Parkinson’s symptoms but is not indicated for dementia.

C. Ambien❌→Used for insomnia, not Alzheimer's dementia.

Ambien (Zolpidem) is a sedative-hypnotic for sleep disordersand does not treat cognitive decline.

D. Atacand❌→Used for hypertension, not dementia.

Atacand (Candesartan) is an angiotensin receptor blocker (ARB) used to treat high blood pressure and heart failure.

FDA Approved Uses for Donepezil (Aricept)– Confirms its indication for all stages of Alzheimer’s disease.

Alzheimer’s Association Treatment Guidelines– Listscholinesterase inhibitors as first-line therapy for dementia.

PTCB PTCE Exam Content Outline– Covers pharmacologic treatments for cognitive disorders.

Why Not the Other Options?Key References:

Look-alike/sound-alike (LASA) medications are drugs that areeasily confused due to similar spelling or pronunciation, which increases the risk of medication errors.

Citalopram(Celexa) →Selective serotonin reuptake inhibitor (SSRI) used for depression

Celecoxib(Celebrex) →Nonsteroidal anti-inflammatory drug (NSAID) used for pain and inflammation

Why Are Citalopram and Celecoxib Considered LASA?Both drugs sharesimilar spelling and pronunciation, increasing the chance of errors inprescribing, dispensing, and administration.

Example of potential errors: A patient withdepressionmay mistakenly receiveCelecoxib (NSAID)instead ofCitalopram (antidepressant), leading to untreated depression and unnecessary NSAID use.

A. Lisinopril and Metoprolol❌→Different drug classes, butnot commonly confused.

Lisinopril(ACE inhibitor for blood pressure)

Metoprolol(Beta-blocker for blood pressure and heart conditions)

C. Acebutolol and Acetazolamide❌→Although their names look similar, they haveless common confusion in clinical practice.

Acebutolol(Beta-blocker)

Acetazolamide(Diuretic for glaucoma, altitude sickness)

D. Naproxen and Misoprostol❌→These are oftenprescribed togetherbut arenot confused with each other.

Naproxen(NSAID for pain)

Misoprostol(Used to protect the stomach from NSAID-induced ulcers)

Institute for Safe Medication Practices (ISMP) LASA List– ConfirmsCitalopram and Celecoxibas common look-alike/sound-alike drugs.

PTCB PTCE Exam Content Outline– Covers error prevention strategies, including LASA medications.

FDA Medication Error Prevention Guidelines– Recommends usingTall Man Lettering(e.g.,CeleXib vs. CitaloPram) to differentiate LASA drugs.

Why Not the Other Options?Key References:

TheNational Drug Code (NDC)is a unique 10- or 11-digit number assigned to each drug product in the U.S.Understanding how NDC numbers are structuredis key to answering this question correctly.

The NDC format is as follows:XXXXX-YYYY-ZZ

First segment (XXXXX)→Labeler (Manufacturer or Distributor)

Second segment (YYYY)→Product Code (Specific Drug, Strength, and Formulation)

Third segment (ZZ)→Package Size (Quantity in the Package)

How to Find the Correct Answer?The given NDC:76439-103-10

76439= Manufacturer/Labeler Code

103= Product Code (Specific Drug & Strength)

10= Package Size

To matchthe same medication, theManufacturer (76439) and Product Code (103) must remain the same. Only thepackage size (last segment) can change.

A. 76439-208-10❌→Incorrect

Product Code (208) does not match (103).

B. 76439-103-50✅→Correct

Same manufacturer (76439) and same drug (103), but different package size (50 instead of 10).

C. 74693-103-10❌→Incorrect

Different manufacturer (74693 instead of 76439).

D. 74693-206-50❌→Incorrect

Different manufacturer (74693) and different product code (206).

FDA NDC Directory– Provides details on NDC structure and product identification.

PTCB PTCE Exam Content Outline– Covers NDC interpretation and drug identification.

Drug Supply Chain Security Act (DSCSA)– Reinforces correct medication identification using NDC.

Analyzing the Answer Choices:Key References:

When entering prescription information into a pharmacy computer system,using leading zeros helps prevent medication dosing errorsby clearly specifying the correct dose.

What Are Leading Zeros?Aleading zerois azero placed before a decimal pointto prevent misinterpretation.

✅Correct:0.5 mg(clearly means half a milligram)

❌Incorrect:.5 mg(could be mistaken for 5 mg, leading to a10× overdose).

A. Allergies❌→Important, butnot directly related to dosing errors.

C. Insurance Information❌→Unrelated to medication dosing safety.

D. Contraindications❌→Relevant to medication selection, but not specific to preventing dosing errors.

ISMP Best Practices for Medication Safety– Recommends usingleading zerosto prevent dosing mistakes.

Joint Commission "Do Not Use" List– Warns against missing leading zeros in prescriptions.

PTCB PTCE Exam Content Outline– Covers prescription entry and error prevention strategies.

Why Not the Other Options?Key References:

The axilla refers to the underarm area. Clobetasol is a high-potency corticosteroid, and such steroids are not recommended for use on thin-skinned areas like the face, groin, or underarms (axilla) due to risk of increased absorption and adverse effects like skin atrophy.

Mosby’s Pharmacy Technician: Principles and Practice explains:

“High-potency corticosteroids should not be applied to intertriginous areas such as the axilla, groin, or face due to increased absorption and systemic risk.”

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A medication'sstabilityrefers tohow well it maintains potency, effectiveness, and safety over time. Several factors candegrade medications, includingoxygen, moisture, temperature, and light.

Oxygen exposurecan causeoxidation, leading to drug degradation and loss of potency.

Many medications, especiallyvitamins (e.g., vitamin C), biologics, and certain antibiotics, are susceptible to oxidative damage.

Medications requiring protection from oxygen are often packaged inair-tight containersorblister packs.

A. Allergies→ Incorrect; allergies affect thepatient, not the drug’sstability.

B. Equivalence→ Incorrect; equivalence refers tobioavailabilitybetween generic and brand-name drugs, not drug stability.

D. Indications→ Incorrect; indications refer toapproved uses of a drug, not factors affecting its stability.

Other Answer Choices Explained:References:

USP <797> and <795> Guidelines on Medication Stability

FDA Drug Stability and Shelf Life Guidelines

PTCB PTCE Exam Content Outline (Medication Storage & Stability)