Your doctor has asked you to have a calcium excretion test. This information sheet tells you what the test is and how you need to prepare for the test.

Calcium excretion is a test that is used to help determine the reason why you have a raised level of calcium in your blood. In particular, the test is used to confirm or exclude a condition called Familial Benign Hypercalcaemic Hypocalcuria (FBH) which is thought to be harmless and requires no treatment. 

You will have been given a small plastic container with a white top to collect a sample of urine.

Procedure  

You should eat nothing from 10.00 p.m. the night before the test. You may only drink water.

When you get up in the morning, empty your bladder into the lavatory. Do not collect this sample. 

The next time you pass urine collect a sample into the white topped plastic container provided.

Ensure that the container is labelled with your name, hospital number (if you know it), GP or Hospital name and the date and time the sample was collected.

Bring this urine sample with you to the Pathology Department at Basildon, Orsett or St. Andrew's Hospital where you will have a blood sample taken.

Do not eat or drink anything (other than water) until your blood sample has been taken

Last edited 07/08/08