Glomerular filtration rate test

You might have this test to measure how well your kidneys are working and how quickly they remove waste products from the blood. 

Why you have it

You may have this test to measure how well your kidneys are working and how quickly they remove waste products from the blood. It is often used if you need chemotherapy treatment.

How you have it

First you have an injection that contains a dye. Then you have blood samples taken over a few hours. These show well your kidneys are filtering out the dye.

Getting your results

Your scan will be looked at by a specialist doctor and you should get your results within 1 or 2 weeks. You won't get any results at the time of the scan. 

Waiting for test results can make you anxious. Ask your doctor or nurse how long it will take to get them. Contact them if you haven’t heard anything after a couple of weeks.

You might have the contact details for a specialist nurse. You can contact them for information and support if you need to. It may help to talk to a close friend or relative about how you feel. 

For support and information, you can call the Cancer Research UK nurses on freephone 0808 800 4040. The lines are open from 9am to 5pm, Monday to Friday.

Contact the doctor that arranged the test if you haven't heard anything after a couple of weeks.

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