Prepare a 0.5 mg dosage from an available strength of 200 mcg per mL. Calculate the mL needed to prepare this dosage?

To prepare a 0.5 mg dosage from a 200 mcg/mL solution, first convert 0.5 mg to micrograms, resulting in 500 mcg. Then, calculate the volume needed using the formula, which shows that 2.5 mL of the solution is required.
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Answered by Anonymous | 2025-07-07

First, with dimensional analysis:
mg * mcg/mg * ml / mcg = ml
Now put in the numbers
0.5 mg * 1000 mcg/mg * 1 ml / 200 mcg ** = 2.5 ml ** ;

Answered by jsimpson11000 | 2025-07-07