Question

A pharmacy technician is preparing a 0.75mg dosage. The available concentration is 50mcg/mL, a patient needs a 125 dose. How many mL is needed for this dose

Answer 1

2.5 mL of the solution is needed for this dose.

To calculate this, we can use the following formula:

dose (in mL) = (desired dose in mg) / (concentration in mg/mL)

First, we need to convert the concentration from mcg/mL to mg/mL. Since 1 mg = 1000 mcg, we can convert 50 mcg/mL to mg/mL by dividing by 1000:

50 mcg/mL = 0.050 mg/mL

Now we can use the formula to calculate the dose in mL:

dose (in mL) = (0.75 mg) / (0.050 mg/mL) = 15 mL

However, this is the total volume of solution needed to prepare the dose. Since the patient only needs 125 mcg, which is 0.125 mg, we need to adjust the volume accordingly:

dose (in mL) = (0.125 mg) / (0.050 mg/mL) = 2.5 mL

Therefore, 2.5 mL of the solution is needed for this dose.