Ontario Registered Pharmacy Technician (RphT) Practice Exam

The standard unit of measure for liquid medications in pharmacy is milliliters (mL). This metric unit is widely used due to its precision and the ease with which it can be scaled for both small and large volumes. Milliliters are ideal for expressing the dosage of liquid medications as they allow healthcare professionals to provide accurate dosing, which is crucial for patient safety and therapeutic effectiveness.

Liters (L) are also a metric measurement but are more commonly used for larger volumes rather than for the precise dosages typically required for medications. Ounces (oz), while still recognized in some contexts, are primarily used in certain regions and can lead to confusion due to variations in measurement systems. Grams (g) are a unit of mass rather than volume, making them unsuitable for liquid medications, which require a volume measurement. Thus, milliliters are the most appropriate and standard unit of measure for liquid medications in pharmacy practice.