If a drug concentration is 1.5 μg/mL, how many mL would you need to deliver 4.5 μg?

To determine how many mL are needed to deliver 4.5 μg of a drug with a concentration of 1.5 μg/mL, you can use the formula:

[ \text{Volume (mL)} = \frac{\text{Desired dose (μg)}}{\text{Concentration (μg/mL)}} ]

Substituting the given values into the formula:

[ \text{Volume (mL)} = \frac{4.5 , \text{μg}}{1.5 , \text{μg/mL}} ]

When you perform the calculation:

[ 4.5 \div 1.5 = 3 ]

This means you would need 3 mL to deliver 4.5 μg of the drug, confirming that the answer is indeed 3 mL.

This shows the relationship between the dose you want to deliver, the concentration of the drug, and the volume needed, which is essential in medication administration to ensure accurate dosing.