Question
Codeine 40mg is ordered. The stock vial is 60mg/3ml. How many ml are required for the dose?
Answers
GPT-4o mini
To calculate the number of milliliters required for a 40 mg dose of codeine when the stock vial concentration is 60 mg/3 ml, you can use the following formula:
\[
\text{Volume} = \left( \frac{\text{Desired Dose}}{\text{Concentration}} \right) \times \text{Volume in mL}
\]
Given:
- Desired Dose = 40 mg
- Concentration = 60 mg in 3 ml
First, find the concentration in mg/ml:
\[
\text{Concentration} = \frac{60 \text{ mg}}{3 \text{ ml}} = 20 \text{ mg/ml}
\]
Now, use the desired dose and the concentration to find the volume required:
\[
\text{Volume} = \frac{40 \text{ mg}}{20 \text{ mg/ml}} = 2 \text{ ml}
\]
Therefore, you will need **2 ml** of the stock vial to obtain a 40 mg dose of codeine.
\[
\text{Volume} = \left( \frac{\text{Desired Dose}}{\text{Concentration}} \right) \times \text{Volume in mL}
\]
Given:
- Desired Dose = 40 mg
- Concentration = 60 mg in 3 ml
First, find the concentration in mg/ml:
\[
\text{Concentration} = \frac{60 \text{ mg}}{3 \text{ ml}} = 20 \text{ mg/ml}
\]
Now, use the desired dose and the concentration to find the volume required:
\[
\text{Volume} = \frac{40 \text{ mg}}{20 \text{ mg/ml}} = 2 \text{ ml}
\]
Therefore, you will need **2 ml** of the stock vial to obtain a 40 mg dose of codeine.