Cr Calculator

This Creatinine Clearance Calculator allows users to estimate kidney function and categorize renal health based on age, weight, serum creatinine levels, and gender, utilizing the Cockcroft-Gault formula.

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Step-by-Step Guide to Using the Creatinine Clearance Calculator

The Creatinine Clearance Calculator is a helpful tool for estimating kidney function based on individual demographics and lab values. Follow the steps below to ensure accurate and efficient use of the calculator.

Step 1: Provide Required Inputs

Begin by entering the necessary input values into the calculator’s fields. Ensure the data you input follows the specified validation rules to maintain accuracy.

  • Enter Age: Input your age in years. This should be a number between 18 and 120.
  • Enter Weight: Input your weight in kilograms. Acceptable values range from 20 to 300 kg. Use increments of 0.1 for precision.
  • Enter Serum Creatinine: Input your serum creatinine level in mg/dL. The value should be between 0.1 to 20 mg/dL with increments of 0.01.
  • Select Gender: Choose your gender from the options provided: Male or Female.

Step 2: Understanding the Calculations

The calculator will use the inputs to perform the following calculations:

  • Creatinine Clearance (Cockcroft-Gault): The formula used is ((140 - age) * weight * (gender-specific factor)) / (72 * serumCreatinine). For males, the gender-specific factor is 1, and for females, it is 0.85.
  • Renal Function Category: Based on the calculated creatinine clearance (Cockcroft-Gault), renal function is categorized as follows:

    • Normal: ≥ 90 mL/min
    • Mild Decrease: 60-89 mL/min
    • Moderate Decrease: 30-59 mL/min
    • Severe Decrease: 15-29 mL/min
    • Kidney Failure: < 15 mL/min

Step 3: Interpreting Results

After entering all required information, the calculator will display the results in two main fields:

  • Creatinine Clearance (Cockcroft-Gault): Presented in mL/min with one decimal, this value represents an estimate of your creatinine clearance.
  • Renal Function Category: This qualitative assessment provides a general classification of your kidney function based on the calculated creatinine clearance.

Review these results carefully and consult with a healthcare provider for a comprehensive analysis and next steps, especially if results indicate decreased renal function.