If a medication is available as 500 mg/10 mL and the prescribed dose is 1.5 g, how much volume needs to be drawn up?

To determine the correct volume of medication to draw up, it's important to first convert the prescribed dose from grams to milligrams because the medication concentration is provided in milligrams. The prescribed dose is 1.5 g, which is equivalent to 1500 mg (since 1 g = 1000 mg).

Next, we know that the medication is available at a concentration of 500 mg in every 10 mL. To find out how many mL are needed to obtain the required 1500 mg, we can set up a proportion.

First, we calculate how many mg are in 1 mL of the solution:

• If 500 mg is in 10 mL, then 1 mL contains 50 mg (500 mg / 10 mL = 50 mg/mL).

Now, to find out how much volume is needed for 1500 mg:

• We take the total mg needed (1500 mg) and divide it by the mg per mL (50 mg/mL):

1500 mg ÷ 50 mg/mL = 30 mL.

Thus, you need to draw up 30 mL of the solution to achieve the prescribed dose of 1.5 g.