Renal Dose Adjustment Calculator
Calculate appropriate medication dosage adjustments for patients with impaired kidney function based on creatinine clearance (CrCl) and other renal function parameters.
Step 1: Patient Information
Understanding Creatinine Clearance
Creatinine clearance (CrCl) is a measure of kidney function. It estimates the rate at which creatinine is cleared from the blood by the kidneys. Normal CrCl is approximately 90-120 mL/min.
Step 2: Medication & Dosage
About Renal Dose Adjustments
Many medications require dose adjustment in patients with impaired kidney function to prevent toxicity. Adjustments can include reducing the dose, extending the dosing interval, or both.
Dose Adjustment Results
Recommended Adjusted Dose
Renal Function Classification
Medication Adjustment Guidelines
| Medication | Normal Dose | CrCl 30-50 | CrCl 10-30 | CrCl < 10 |
|---|
Renal Function Analysis
Calculation Formula (Cockcroft-Gault)
CrCl (male) = [(140 – Age) × Weight] / (72 × SCr)
CrCl (female) = CrCl (male) × 0.85
Creatinine Clearance (CrCl) is calculated using the Cockcroft-Gault equation. This estimate helps determine the appropriate medication dosage adjustment based on kidney function.
Dose Adjustment Principles
For renally eliminated drugs, the dose is typically reduced proportionally to the reduction in CrCl. Some drugs require more aggressive adjustments or should be avoided entirely in severe renal impairment.
Important Medical Disclaimer
This calculator provides estimates for educational purposes only. Always consult a healthcare professional for actual medication dosing decisions. Do not adjust medications without medical supervision.
Consult a Healthcare Professional