How many mL are needed for 2 mg of a 0.1 mg per unit solution?

Calculation of Volume for 2 mg Dose

To administer 2 mg of medication from a 24 mg vial with a concentration of 0.1 mg per unit, you need 20 mL. 1

Step-by-Step Calculation

• Given information:

  • 24 mg vial × 2.4 mL = 0.1 mg per unit
  • Desired dose = 2 mg 1

• First, determine the number of units needed:

  • 2 mg ÷ 0.1 mg/unit = 20 units 1

• Since each unit equals 1 mL (as per the concentration calculation), the volume needed is 20 mL 1

Verification of Calculation

• The concentration can be verified as:

  • 24 mg ÷ 2.4 mL = 10 mg/mL
  • 10 mg/mL means 0.1 mg per 0.01 mL
  • Therefore, 1 unit = 0.1 mg = 1 mL 1

• Double-checking with the dose-volume formula:

  • Volume = Desired dose ÷ Concentration
  • Volume = 2 mg ÷ (0.1 mg/mL) = 20 mL 1

Important Considerations

• Always verify medication concentration before administration to ensure accurate dosing 1
• Double-check calculations, especially when working with medications that have critical dosing requirements 1
• Consider using a calibrated measuring device for precise volume measurement 1