1. What is Urine Calcium Creatinine Ratio?

The Urine Calcium Creatinine Ratio is a simple test used to assess calcium excretion in urine. It helps evaluate hypercalciuria (excessive calcium in urine) which can be associated with kidney stones, bone diseases, and certain metabolic disorders.

2. How Does the Calculator Work?

The calculator uses the following formula:

Where:

• Urine Calcium — Calcium concentration in urine (mg/dL)
• Urine Creatinine — Creatinine concentration in urine (mg/dL)

Explanation: The ratio normalizes calcium excretion to creatinine excretion, accounting for variations in urine concentration.

3. Importance of Urine Calcium Creatinine Ratio

Details: This ratio is particularly useful in evaluating patients with recurrent kidney stones, monitoring treatment for hypercalciuria, and assessing calcium metabolism disorders.

4. Using the Calculator

Tips: Enter both urine calcium and urine creatinine values in mg/dL. Both values must be greater than zero for accurate calculation.

5. Frequently Asked Questions (FAQ)

Q1: What is a normal urine calcium creatinine ratio?
A: For adults, a normal ratio is typically less than 0.14 mg/mg (or less than 0.20 mg/mg in some references). Values may vary slightly between laboratories.

Q2: When is this test typically ordered?
A: This test is commonly ordered for patients with recurrent kidney stones, suspected hypercalciuria, or certain metabolic bone diseases.

Q3: Are there any preparation requirements for this test?
A: Typically, a random urine sample is sufficient. Fasting is not usually required, but follow your healthcare provider's specific instructions.

Q4: What does a high ratio indicate?
A: A high ratio may indicate hypercalciuria, which can be associated with kidney stone formation, hyperparathyroidism, or other calcium metabolism disorders.

Q5: Can medications affect the results?
A: Yes, certain medications like diuretics, calcium supplements, and vitamin D can affect calcium excretion and thus the ratio results.