Oxalate (24 Hrs Urine)

What is this test?

This urine test is used to measure the levels of oxalate in your urine. Increased levels of oxalate can crystallize to form stones. High levels of oxalate are caused by eating a diet rich in oxalate or increased production of oxalate by the body.

Why is this test performed?

This test is performed:

• To determine the cause of kidney stones
• To diagnose hyperoxaluria
• To monitor treatment for kidney stones
• If there are frequent kidney stones
• If there are multiple kidney stones

• Sample: Since it’s a 24-hour urine test; you have to collect urine samples in a sterile container throughout the day for 24 hours, except the early morning urine. Wash your hands and genitals thoroughly before and after taking the sample.
• The sample is sent to the laboratory for analysis.

1. What should I avoid before the test?

Avoid intake of Vitamin-C rich foods and supplements 48 hours before the test.

2. What will affect my test results?

• Eating oxalate-rich diet before the test
• Inflammation of the bowel
• Previous intestinal surgery.

3. What foods are rich in oxalate?

Some foods that are rich in oxalate are:

• Spinach
• Almonds
• Chocolates
• Strawberries
• French fries

4. How are kidney stones formed?

Increased levels of oxalate in the body can combine with calcium to form a hard stone that hooks in the urinary tract leading to severe pain.

5. What are the symptoms of kidney stones?

Following are the symptoms of kidney stones:

• Painful urination
• hematuria
• Pain in abdomen
• Cloudy urine
• Foul-smelling urine
• Fever and chills.

Normal values:

Less than 45 mg per day.

• Interpretation of test results:

Increased levels: Increased risk of kidney stones.

You should get tested to:

1. To diagnose the cause of kidney stones
2. If there are frequent kidney stones
3. If there are multiple kidney stones
4. To diagnose hyperoxaluria
5. To monitor treatment for kidney stones