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Sterile Compounding & Pharmacy Calculations Flashcards

6 cards from real PTCB practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

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  1. What type of environment is required for preparing sterile IV admixtures?

    Answer: Laminar airflow workbench (LAFW) or ISO 5 environment

    Sterile IV preparations must be prepared in an ISO 5 (Class 100) environment using a laminar airflow workbench to minimize contamination.

  2. How many milligrams are in 2 grams?

    Answer: 2000 mg

    There are 1,000 milligrams in 1 gram, so 2 grams = 2,000 mg.

  3. A vial contains 500 mg/10 mL. How many mL are needed to prepare a 250 mg dose?

    Answer: 5 mL

    500 mg/10 mL = 50 mg/mL; 250 mg ÷ 50 mg/mL = 5 mL needed.

  4. What is the beyond-use date (BUD) for a low-risk sterile preparation stored at room temperature according to USP ?

    Answer: 24 hours

    USP assigns low-risk sterile preparations a maximum BUD of 48 hours at controlled room temperature.

  5. Which type of hood is used for preparing hazardous sterile preparations (e.g., chemotherapy)?

    Answer: Biological safety cabinet (BSC) Class II

    Hazardous sterile preparations require a Class II Biological Safety Cabinet (BSC) with vertical laminar flow and exhaust HEPA filtration to protect the preparer.

  6. A patient needs 1 L of D5W to infuse over 8 hours. What is the infusion rate in mL/hr?

    Answer: 125 mL/hr

    1,000 mL ÷ 8 hours = 125 mL/hr infusion rate.