The PTCE (Pharmacy Technician Certification Exam) is an allied-health certification awarded by PTCB.
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Twenty PTCE (Pharmacy Technician Certification Exam) questions, with the answers hidden until you want them — covering Pharmacology, Law, Safety, Calculations and more. They are real cards from our 1000-card deck, not the 30 on the free preview page, so you can use both. Work through them cold, then use your score below to decide what to study next. PTCB publishes the official exam outline — check it for the real blueprint.
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Which segment of the nephron do Thiazide diuretics primarily inhibit sodium reabsorption, and what is a common electrolyte abnormality associated with their use?
Show answer →Thiazides (e.g., HCTZ, Chlorthalidone) inhibit the Na+/Cl- symporter in the Distal Convoluted Tubule. Common abnormalities: Hypokalemia (low potassium), Hyponatremia (low sodium), and Hyperuricemia (high uric acid). PTCB Tip: Remember that Thiazides are often first-line for hypertension but can worsen Gout due to uric acid retention. Monitoring of electrolyte panels is a standard of care for patients on these medications.
A patient is prescribed Furosemide 40mg BID. What specific administration timing should the technician verify on the label to ensure patient compliance and safety?
Show answer →The second dose should be scheduled in the late afternoon (around 4 PM) rather than at bedtime. Rationale: Taking diuretics late in the evening causes nocturia (excessive nighttime urination), increasing fall risks, especially in elderly patients. PTCB Tip: Quality assurance checks often focus on sig codes that promote safety and adherence. Do not take after 6 PM is a common auxiliary label for this class.
A patient profile indicates a severe anaphylactic allergy to Sulfamethoxazole. Which class of diuretics requires cautious screening or pharmacist intervention due to potential cross-reactivity?
Show answer →Loop diuretics (except Ethacrynic acid) and Thiazide diuretics contain a sulfonamide moiety. While the risk of cross-reactivity between sulfa antibiotics and non-antibiotic sulfonamides is low, the PTCB emphasizes screening for these allergies. Clinical Pearl: Ethacrynic acid (Edecrin) is the only Loop diuretic safe for true sulfa-allergic patients. Technicians must flag these for pharmacist review to prevent potential hypersensitivity reactions.
A patient taking Spironolactone (Aldactone) asks if they should use a potassium-based salt substitute to improve their diet. What is the primary concern regarding this interaction?
Show answer →Hyperkalemia (excessive potassium levels). Spironolactone is a potassium-sparing diuretic (aldosterone antagonist). Combining it with potassium supplements or salt substitutes (which contain KCl) significantly increases the risk of life-threatening cardiac arrhythmias. PTCB Tip: Be alert for hidden potassium sources in diet and OTC products when K-sparing agents are dispensed. This is a common Drug-Food interaction question on the exam.
Which Loop diuretic is most associated with ototoxicity (hearing loss) if administered too rapidly via IV, and what is the primary site of action for this class?
Show answer →Furosemide (Lasix) is highly associated with ototoxicity, especially at high doses or rapid IV push. Loop diuretics act on the Thick Ascending Limb of the Loop of Henle, inhibiting the Na+/K+/2Cl- carrier. Clinical Pearl: This class is the most potent diuretic group and is preferred for acute pulmonary edema and congestive heart failure. PTCB Tip: Distinguish Loops (Henle) from Thiazides (Distal Tubule) for mechanism of action questions.
Match the following diuretic brands to their generic names and specific pharmacological class: 1. Lasix, 2. Microzide, 3. Aldactone.
Show answer →1. Lasix = Furosemide (Loop Diuretic); 2. Microzide = Hydrochlorothiazide (Thiazide Diuretic); 3. Aldactone = Spironolactone (Potassium-Sparing Diuretic/Aldosterone Antagonist). PTCB Tip: Brand/Generic recognition is a core component of the exam. Ensure you can categorize these by their mechanism of action, as questions often ask Which of the following is a Loop diuretic? using only brand names.
Why is Triamterene frequently formulated with Hydrochlorothiazide (e.g., Maxzide or Dyazide) instead of being used as a monotherapy for hypertension?
Show answer →To offset potassium loss. HCTZ (Thiazide) causes potassium depletion (hypokalemia), while Triamterene (Potassium-sparing) helps retain it. The combination aims to maintain eukalemia (normal potassium levels). PTCB Tip: Combination products are high-yield. Recognize that these are used to simplify dosing and mitigate side effects of individual components. Triamterene alone is a weak antihypertensive.
Under the Controlled Substances Act (CSA), which schedule is defined by a high potential for abuse, no currently accepted medical use in the United States, and a lack of accepted safety for use under medical supervision?
Show answer →Schedule I (CI). These substances are strictly prohibited for prescription use. Examples include heroin, LSD, and MDMA. Note for 2026: While legislative discussions regarding marijuana continue at the federal level, for the PTCE, follow the most current DEA scheduling which traditionally places it in CI unless a final rescheduling rule is explicitly cited. Exam Tip: CI drugs cannot be dispensed by a pharmacy; they are only used for approved research purposes.
A drug has a high potential for abuse and an accepted medical use, but its use may lead to severe physical or psychological dependence. Which CSA schedule does this describe, and what is a classic example?
Show answer →Schedule II (CII). These drugs have a high potential for abuse but are legal for medical use with strict controls. Examples include Oxycodone, Fentanyl, Morphine, and stimulants like Methylphenidate. Clinical Pearl: The severe nature of the dependence is the key word in the definition for CII. Exam Strategy: Remember that CII prescriptions cannot be refilled; a new prescription is required for every fill.
According to the CSA, which schedule includes drugs with a potential for abuse less than CI or CII, a currently accepted medical use, and may lead to moderate or low physical dependence or high psychological dependence?
Show answer →Schedule III (CIII). The defining characteristic is the moderate to low physical but high psychological dependence profile. Examples include Buprenorphine (Suboxone), Ketamine, and Anabolic Steroids. Exam Tip: Codeine combinations (like Tylenol #3) are CIII, but pure Codeine is CII. PTCB often tests this distinction to ensure technicians understand how concentration or combination affects scheduling.
Which drug class is consistently categorized as High-Alert by the ISMP in community pharmacy settings due to the high risk of significant patient harm when used in error?
Show answer →Anticoagulants (e.g., warfarin, heparin, DOACs) and Insulins are the top high-alert categories. The ISMP (Institute for Safe Medication Practices) defines high-alert medications as those that may not have a higher error rate, but the consequences of errors are more devastating. Strategy Tip: On the PTCE, if you see a list of drugs, prioritize anticoagulants, insulin, opioids, and chemotherapy as high-alert.
A technician is stocking hydrOXYzine and hydrALAzine. What specific ISMP-recommended strategy is used in their names to prevent look-alike/sound-alike (LASA) errors?
Show answer →Tall-man lettering. This technique uses capitalized letters to highlight the parts of drug names that are different (e.g., hydrOXYzine vs. hydrALAzine). This draws the eye to the distinction, reducing selection errors. PTCB Key Point: The FDA and ISMP have specific lists of approved Tall-man names; technicians must recognize these in the pharmacy software and on shelf labels.
Which concentrated electrolyte is strictly prohibited from being stored in floor stock/patient care areas and must remain in the pharmacy?
Show answer →Potassium Chloride (KCl) concentrate. Accidental IV bolus administration of concentrated KCl causes immediate cardiac arrest. ISMP standards require this to be stored only in the pharmacy and dispensed only as premixed IV bags. Clinical Pearl: Other restricted electrolytes include Magnesium Sulfate (>50%) and Sodium Chloride (>0.9%).
A parent is instructed to give a child 1.5 teaspoons of amoxicillin suspension three times daily for 10 days. How many total milliliters (mL) should the pharmacy technician dispense for the full course?
Show answer →Answer: 225 mL. Rationale: 1. Convert teaspoons to mL: 1 teaspoon (tsp) = 5 mL. Therefore, 1.5 tsp = 7.5 mL per dose. 2. Calculate daily volume: 7.5 mL/dose × 3 doses/day = 22.5 mL/day. 3. Calculate total volume: 22.5 mL/day × 10 days = 225 mL. Exam Strategy: The PTCB emphasizes standard household-to-metric conversions. Always remember: 1 tsp = 5 mL and 1 tbsp = 15 mL. A common distractor is confusing teaspoons with tablespoons (1.5 tbsp would be 22.5 mL per dose). Always double-check the unit requested (mL) versus the unit provided (tsp).
A patient weighs 176 lbs. The physician orders a medication with a dosage of 5 mg/kg. What is the total dose in milligrams (mg) that the patient should receive?
Show answer →Answer: 400 mg. Rationale: 1. Convert weight from pounds to kilograms: 176 lbs ÷ 2.2 lbs/kg = 80 kg. 2. Calculate the dose: 80 kg × 5 mg/kg = 400 mg. Exam Strategy: Weight-based dosing is a high-yield PTCB topic. The conversion factor 2.2 is critical. Distractors often result from multiplying by 2.2 instead of dividing, or failing to convert units at all (176 × 5 = 880 mg). Ensure you round the kg weight to the nearest tenth if necessary before the final calculation, though here it is a whole number.
A prescription for Glucotrol (glipizide) reads: 5mg po bid ac. What is the most accurate translation for the patient's prescription label, and why is the timing significant?
Show answer →The label should read: Take 1 tablet (5mg) by mouth twice daily before meals. The abbreviation ac (ante cibum) means before meals. For sulfonylureas like glipizide, taking the medication 30 minutes before a meal is critical to synchronize insulin release with post-prandial glucose elevation. PTCB Note: ac (before meals) and pc (after meals) are high-yield abbreviations frequently tested in the context of diabetic and GI medications.
A prescription for an antibiotic suspension reads: 1 tsp po q6h x 10 days. How many doses will the patient take in total, and how does this frequency differ from qid?
Show answer →The patient will take 40 doses (4 doses per day for 10 days). q6h (every 6 hours) implies around the clock dosing to maintain consistent therapeutic blood levels of the antibiotic. In contrast, qid (four times a day) is typically administered during waking hours (e.g., 9am, 1pm, 5pm, 9pm). For antibiotics, q6h is preferred to prevent sub-therapeutic troughs. Exam Tip: PTCB often tests the mathematical difference between fixed intervals (q6h) and daily frequencies (qid).
A technician is preparing a compound containing iodine, which is known to stain equipment. Which mortar and pestle should be selected to prevent permanent staining and ensure easy cleanup?
Show answer →Glass mortars and pestles are the preferred choice for compounds containing chemicals that stain (like iodine, sulfur, or coal tar) or those with strong odors. Glass is non-porous and non-absorbent, making it easier to clean and preventing cross-contamination. Clinical Tip: Wedgewood and porcelain are porous and will easily stain. Glass is also ideal for mixing liquids and semi-soft dosage forms. PTCE focus: Use glass for liquids/stains, Wedgewood for grinding.
A Class A prescription balance has a sensitivity requirement (SR) of 6 mg. To maintain an error rate of no more than 5%, what is the minimum weighable quantity (MWQ) that can be accurately measured on this balance?
Show answer →The formula for Minimum Weighable Quantity (MWQ) is: (Sensitivity Requirement / Acceptable Error) x 100. In this case: (6 mg / 5) x 100 = 120 mg. PTCE Strategy: Always remember the 5% error limit standard unless otherwise stated. If the required weight is less than the MWQ, the technician must use the aliquot method (dilution with an inert filler) to ensure accuracy. Weighing amounts below the MWQ results in unacceptable measurement variability.
What is the correct physiological sequence of electrical conduction through the heart that ensures coordinated ventricular contraction?
Show answer →The sequence is: SA Node (pacemaker) -> AV Node -> Bundle of His -> Right and Left Bundle Branches -> Purkinje Fibers. The SA node initiates the impulse. The AV node provides a critical delay (approx. 0.1s) allowing the atria to contract and fill the ventricles before they squeeze. PTCB Exam Strategy: Distinguish between the SA node (pacemaker) and AV node (delay). Common distractor: Reversing the order of the Bundle of His and Purkinje fibers. Clinical Pearl: Antiarrhythmic drugs often target specific phases of this electrical cycle to correct rhythm disturbances.
17–20 correct
Strong. Move to the hardest material and timed drilling rather than re-reading topics you already know.
12–16 correct
A normal mid-prep score. Work the topics you missed one at a time — the topic pages below are built for exactly that.
Under 12 correct
Early days. Go topic by topic instead of taking more mixed tests: pick your weakest area below and drill it until the questions feel routine.
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