- Rx Calculators
Click on a topic to display help information. These popup help messages can be moved and resized so you can fill in values with the help messages open.
- Clearance To calculate creatinine clearance, age, height, weight, and gender in the Patient Parameters section and serum creatinine in Creatinine Clearance section are required. You can use the Birthdate field to auto-calculate the age.
Adjusted weight is used if actual weight is greater than 120% of ideal body weight.
For patient age 65 years or older, the serum creatinine will be rounded to 1.0 if it is less than 1.0.
- BSA To calculate body-surface area, enter height and weight. Make sure the correct units for height and weight are selected.
- Albumin Correction Phenytoin (Dilantin) and calcium need to be corrected for low albumin. Calcium needs correction for albumin < 4 and phenytoin for albumin < 4.5.
- Iron Dextran Enter height and weight and select gender to determine lean body weight (LBW). LBW is used to calculate the dose unless the patient's actual weight is less than LBW. Enter patient's current hemoglobin and target hemoglobin (usually > 14). The weight that will be used for calculations will be displayed as the Dosing weight.
The calculations provided on this page are based on the principles and equations of pharmacokinetics. The results from these calculations should not replace the clinical judgment of the practitioner. This site assumes no responsibility for injudicious interpretation of calculations.