Introduction
This leaflet tells you about the collection of blood and urine for undertaking a Creatinine Clearance Test. It aims to help you understand the procedure of the collection and answer any questions you may have about completing the test.
For further details please see www.labtestsonline.org.uk which is written by practising laboratory doctors and scientists to help you understand the many clinical laboratory tests that are used in diagnosis and treatment.
The Creatinine Clearance Test is a test of kidney function and needs both a blood sample and 24-hour urine collection from you.
Please take the Pathology request form that you have been given to the Pathology Department at your local hospital and the reception staff will provide you with a container for the urine collection. Your blood test will be done at this time or when you bring the urine container back to the laboratory.
The results for your test will be sent to your requesting doctor when complete.
The collection procedure for the urine sample:
- You have been provided with a plastic jug and a plastic container.
- The jug must be used to collect any urine that you pass during the 24-hour period, and immediately poured (try not spill any) into the plastic container.
- You must collect all urine that you pass over a full 24-hour period. If you forget, and go to the toilet as normal, please let us know and we can provide another container. It is vital that all the urine you pass during this period is placed in the container.
- If for any reason you miss collecting or spill any urine during this period the test will need repeating – if this happens please contact the laboratory (below) or your GP.
- Please store the container in a cool place during the collection period (refrigeration not necessary).
- The collection must be timed accurately as follows:
- At the start (whatever times suits you) of the 24-hour period, go to the toilet to empty your bladder completely – you do not need to collect any of this urine.
- Collect all further urine passed over the 24-hour period into the jug, which must then immediately be poured into the container.
- At the end of the 24-hour period (exactly 24 hours after you started collecting), go to the toilet and empty your bladder – this time collecting any urine passed. Pour the urine into the container.
- The test is now complete. Please ensure the lid is fully tightened. Then return the container together with the Pathology request form to the laboratory as soon possible after completion of the test. Please make sure it is labelled with your name, date of birth, NHS number and the time and date of the urine collection.
- Please dispose of the jug upon completion of the test.
Benefits
The benefit of doing the test is that it will provide your doctor with important results which will help with diagnosis and / or treatment.
Risks
No risks are associated with doing this test, but ensure you follow usual hygiene procedures and wash your hands after providing the sample(s).
Alternatives
There are no alternative tests that could be used to the one that you have been asked to undertake.
Contact details for further information
If you have any queries, please ring your local laboratory:
Goole Tel. 03033 304025 Reception 0830-1600 (Mon-Fri)
Grimsby Tel. 03033 302677 Reception 0800-1700 (Mon-Fri)
Scunthorpe Tel. 03033 302641 Reception 0800-1700 (Mon-Fri)
Louth Tel. 01507 600100 Ext 1253 Reception 0830-1630 (Mon-Fri)
Any comments, compliments, concerns or complaints
If you have any other concerns please talk to your nurse, therapist or doctor. Our Patient Advice and Liaison Service (PALS) is available on 03033 306518 (Grimsby, Scunthorpe and Goole). You can also contact [email protected]
As a Trust we value equality of access to our information and services, therefore alternative formats are available on request at [email protected]
Review Information
Date of issue: May 2024
Review Period: May 2027
