Kidney Function Test Services
Call Now to Book an Appointment
Request A Call Back
Kidney Function Test
You have two kidneys on either side of your spine that are each approximately the size of a human fist. They’re located posterior to your abdomen and below your rib cage.
Your kidneys play several vital roles in maintaining your health. One of their most important jobs is to filter waste materials from the blood and expel them from the body as urine. The kidneys also help control the levels of water and various essential minerals in the body. In addition, they’re critical to the production of:
- vitamin D
- red blood cells
- hormones that regulate blood pressure
Symptoms of kidney problems
Symptoms that may indicate a problem with your kidneys include:
- high blood pressure
- blood in the urine
- frequent urges to urinate
- difficulty beginning urination
- painful urination
- swelling of the hands and feet due to a buildup of fluids in the body
How the tests are performed?
Kidney function tests usually require a 24-hour urine sample and a blood test.
24-hour urine sample
A 24-hour urine sample is a creatinine clearance test. It gives your doctor an idea of how much creatinine your body expels over a single day.
On the day that you start the test, urinate into the toilet as you normally would when you wake up.
For the rest of the day and night, urinate into a special container provided by your doctor. Keep the container capped and refrigerated during the collection process. Make sure to label the container clearly and to tell other family members why it’s in the refrigerator.
On the morning of the second day, urinate into the container when you get up. This completes the 24-hour collection process.
Follow your doctor’s instructions about where to drop the sample off. You may need to return it either to your doctor’s office or a laboratory.