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Laboratory Medicine

General Information / Add On Requests

It is assumed that when a sample is sent to the laboratory, the clinician responsible for the care of the patient has obtained the appropriate and valid consent for the test, storage and sharing of the patient's information with the relevant Health Care Professionals to generate the result so that the laboratory is not required to confirm or document consent.  If additional tests are required evidence that the requesting clinician has authorised the test is required by the laboratory, this may be by providing an additional request form or the electronic equivalent.

Biochemistry York & Scarborough Sites

Routine Biochemistry blood samples are archived and kept for approximately three days. Therefore beyond this, add-on test requests cannot be processed. 

Please see below for information on how to request an add-on. Laboratory staff will check if the sample is still available and is the correct sample type for the tests requested. Please note that some analytes are labile and deteriorate rapidly. In these cases a report will be issued stating that the sample we have left is unsuitable and a fresh sample will have to be taken.  Inpatient add on requests will be processed every hour. GP add on requests will be processed every two hours during the working day. If we are unable to process the add on request, we will issue a report within 2 hours of receiving an inpatient request or 4 hours of receiving a GP add on request detailing why we are unable to process the request. If you have not received a report within this time, you can assume the sample is being processed.

Please use CPD to check for results. CPD is available on the hospital network and is updated with completed results every 15 minutes. The reports for GP surgeries are sent electronically to ICE with regular upload every 2 hours during the day and evening.

York Sites

Urgent add-on requests should be made by phone: (01904 72) 6802 option 1

Non-urgent inpatient/outpatient add-on requests should be made via CPD.

Non-urgent GP add-on requests can now be made via email using the electronic add-on request form: Click Here  

Scarborough Sites

Urgent and GP add-on requests should be made by phone: (01723 34) 2351

Non-urgent inpatient/outpatient add-on requests should be made via CPD or by sending the form through the pneumatic tube (POD) system.

Haematology York Site

Additional examinations may be requested up to 24hrs for coagulation samples and up to 3 days for haematology samples, however requests for blood films, malaria parasite screening and ESR testing are best performed on fresh samples that are <24hrs old.  If you want to add further tests to a sample please ring (01904 72) 6802 option 1.

Haematology Scarborough Site

This procedure is designed to aid the additional analysis on haematology blood samples to ensure a full audit trail and conform with the principles of clinical governance. It is not for use with add-on test requests for urine and faecal analysis. All requests for additional tests must be accompanied by a signed request form clearly stating the tests required. This form is then used to generate further analysis. Haematology: D-Dimer and Paul Bunnell tests are only viable for 24 hours while Plasma Viscosity can be added after a maximum of 5 days.

Microbiology York & Scarborough Sites

Blood samples for serology are kept for 3 weeks, antenatal samples for 1 years. Needlestick samples are kept indefinitely. We also keep a small number of acute serum samples until a convalescent sample is received. If you want to add further tests to a blood sample we will require an additional request. Please phone 01904 726301 to make arrangements.

Most other samples are kept for at least 1 week before they are discarded.  Some samples are kept longer depending on the tests requested. If you want to add further tests to a sample please ring 01904 725721 (York) or 01723 342288 (Scarborough). We will check if we still have the sample and then add the tests. Please note that in some cases the sample may be unsuitable and we will ask you to obtain a fresh sample.

Web Page updated 24: 29/05/19

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