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Tests to monitor PH

There are several tests that your healthcare team may give you to monitor your oxalate levels and kidney health. If you haven’t done these tests in a while, ask your healthcare provider about them.


If you need help interpreting your results, don’t be afraid to ask your healthcare team to help explain them. Also, be sure to ask your healthcare provider what the normal values should look like for you; what’s considered normal can depend on factors such as your age, race, and gender.

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Tests to monitor oxalate levels

24-hour urine test to measure oxalate levels in the urine collected over an entire day.


Spot urine test  to measure oxalate levels collected from a single urine sample. This method is not as accurate as a 24-hour urine test and is mostly used for infants and children.


Blood test to measure oxalate levels in the plasma (blood). This test may be used in more advanced cases of PH, when kidney function has declined.

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Tests to monitor kidney health

Blood test to measure eGFR, which stands for estimated glomerular filtration rate. Your eGFR is a measure of how well your kidneys are doing at filtering out wastes from your blood. It’s the best way to figure out how well your kidney is functioning and to determine your kidney disease stage.


Urine test to measure ACR. ACR stands for albumin-to-creatinine ratio. Your ACR may be measured in a test as a way to look for high levels of albumin (a type of protein), which is a sign of kidney damage.

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Kidney imaging

Imaging tests such as ultrasounds and CT (computed tomography) scans may be done periodically to monitor current stones or to check whether there are new stones that could require surgery. Imaging can also be used to check for nephrocalcinosis.

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    Each person with PH is unique: Your healthcare provider may recommend additional tests for you.

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