Calcium Spot Urine
What is Calcium Spot Urine?
The Calcium Spot Urine Test evaluates if high calcium levels in urine have led to kidney stones. It can also help assess if the dietary intake of calcium is high enough or if the intestine is absorbing enough calcium.
To prepare for the Calcium Spot Urine Test, your doctor might advise you to stop taking medication like potassium citrate or thiazides that might affect the test result. Your doctor might also ask you to follow a specific diet with a certain calcium level for a certain number of days leading up to the calcium urine spot test. An individual with a normal diet may have 100 to 300 mg/day calcium in the urine. Above 300mg/day is considered abnormal.
Why is Calcium Spot Urine done?
- If you have signs or symptoms of kidney disease
- If you have signs or symptoms of parathyroid disorders
- In case of suspected kidney stones
- If your doctor wants to evaluate how well your intestines are absorbing calcium
- In case of suspected bone diseases
Interpreting Calcium Spot Urine results
- Abnormally high levels of calcium in the urine usually indicates hyperparathyroidism, milk alkali syndrome, kidney disease, sarcoidosis, idopathic hypercalciuria, renal tubular acidosis
- Low levels of calcium may be seen in malabsorption syndromes, hypoparathyroidism