The Urine Calcium & Creatinine Ratio Test is a urine test that measures the Calcium/Creatinine Ratio, along with Urine Calcium and Urine Creatinine levels. It helps evaluate calcium excretion through the kidneys, detect abnormal calcium metabolism, and assess the risk of conditions such as kidney stones, hypercalciuria, metabolic bone disorders, and certain kidney diseases.
This test is commonly used in both adults and children to investigate excessive urinary calcium loss and monitor disorders affecting calcium balance.
1.Calcium/Creatinine Ratio
Compares urine calcium with urine creatinine; a more reliable measure of calcium loss than urine calcium alone.
2.Creatinine, Urine
Reflects urine concentration and standardizes the calcium measurement.
3.Calcium, Urine
Measures the amount of calcium passed out by the kidneys in urine.
Also known as: Urine Calcium Creatinine Ratio Test, Calcium/Creatinine Ratio Urine Test, Spot Urine Calcium Test, Urinary Calcium Ratio Test, Urine Ca/Cr Ratio Test
The Urine Calcium & Creatinine Ratio Test measures the amount of calcium excreted in urine relative to creatinine. Since urine concentration varies depending on hydration, calculating the calcium-to-creatinine ratio provides a more reliable assessment than measuring urine calcium alone.
Abnormal urinary calcium excretion may be associated with kidney stone formation, hyperparathyroidism, Vitamin D disorders, metabolic bone disease, and certain kidney conditions. This test is often performed using a single (spot) urine sample and may reduce the need for a 24-hour urine collection in selected situations.
The test evaluates three important urine parameters related to calcium metabolism and kidney function.
Calcium/Creatinine Ratio:
Compares the amount of calcium with creatinine in the urine. An elevated ratio may indicate:
A low ratio may occur in some nutritional deficiencies or other medical conditions and should be interpreted with clinical findings.
This test may be recommended for:
The test requires a urine sample.
Before the test:
| Parameter | Normal range |
|---|---|
| Calcium/Creatinine Ratio | Age-dependent; laboratory reference values apply |
| Calcium, Urine | Varies depending on age, diet, and collection method |
| Creatinine, Urine | Varies with age, muscle mass, and urine concentration |
| Note | Reference ranges may vary depending on age, laboratory methods, urine collection technique, and clinical guidelines. Test results should always be interpreted by a qualified healthcare professional in combination with symptoms and other investigations. |
Reference ranges can differ between labs. Your report shows the range used by the lab.
The Urine Calcium & Creatinine Ratio Test measures calcium, creatinine, and their ratio in urine to evaluate calcium metabolism and assess the risk of kidney stones and related disorders.
The ratio accounts for differences in urine concentration, providing a more reliable assessment of urinary calcium excretion than urine calcium alone.
No. Fasting is generally not required unless your healthcare provider recommends it.
A high ratio may suggest hypercalciuria, increased risk of kidney stones, hyperparathyroidism, Vitamin D excess, or other calcium metabolism disorders.
| Test name | Urine Calcium & Creatinine Ratio Test |
|---|---|
| Location | Chennai |
| Sample type | Urine |
| Number of parameters | 3 |
| Home sample collection | Available |
| Fasting | Not required |
| Report time | As per laboratory processing time |
| Recommended age | 1–99 years |
| Suitable for | Male & Female |
Calcium, Urine:
Measures the amount of calcium excreted by the kidneys. Abnormal levels may be associated with:
Creatinine, Urine:
Reflects the concentration of urine and helps standardize calcium measurements. It also provides useful information when assessing kidney function and interpreting urine test results.
Doctors may recommend this test to:
The test may be advised if you have:
Benefits of the Urine Calcium & Creatinine Ratio Test:
No. The test cannot diagnose kidney stones by itself but helps evaluate the risk and underlying causes of stone formation.
Urine creatinine helps standardize calcium measurements and improves the accuracy of the calcium-to-creatinine ratio.
Yes. The Urine Calcium & Creatinine Ratio Test is commonly used in children to evaluate excessive urinary calcium excretion and investigate recurrent urinary symptoms or kidney stones.
Calcium or Vitamin D supplements may influence results. Inform your healthcare provider about all supplements and medications before testing.
The frequency depends on your medical condition, treatment plan, and your healthcare provider's recommendation. Repeat testing may be advised to monitor calcium metabolism or kidney stone risk.
