Dose Formula:
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The mg dose calculation converts a mg/kg dosage to an absolute mg dose for an average adult (70kg). This is commonly used in medication dosing where weight-based dosing is recommended.
The calculator uses the simple formula:
Where:
Explanation: The calculation assumes an average adult weight of 70kg to convert the weight-based dose to an absolute dose.
Details: Proper dose calculation ensures patients receive effective yet safe medication amounts, especially important for drugs with narrow therapeutic windows.
Tips: Enter the mg/kg dosage. The calculator will automatically compute the total mg dose for a 70kg adult.
Q1: Why use 70kg as the standard weight?
A: 70kg is considered an average adult weight, providing a standardized reference point for dose calculations.
Q2: When should actual body weight be used instead?
A: For patients significantly underweight or overweight, or for drugs with weight-dependent pharmacokinetics, actual body weight should be used.
Q3: Can this be used for pediatric dosing?
A: No, pediatric dosing should always use the child's actual weight, not the standard 70kg adult weight.
Q4: Are there medications where this calculation shouldn't be used?
A: Yes, for drugs dosed based on ideal body weight or adjusted body weight (like many chemotherapies), more specific calculations are needed.
Q5: How accurate is this for obese patients?
A: The calculation may overestimate dose requirements for obese patients, as many drugs don't distribute into adipose tissue proportionally.