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Blood Test, Urinary Test and X-ray Test Results will be communicated via SMS 

From Tuesday 28th May 2019 we will be communicating some test results via text messaging. Please see our homepage for further info.  

Staff Training 

Please note: 

The Surgery closes one Wednesday afternoon a month for Staff training. Please see our ‘When we are closed’ page to find out more or ask Reception if you require further information, thank you in advance for your co-operation. 



Llantwit Major and Coastal Vale

Medical Practice

Llantwit Major

Tel.(01446) 793444

Rhoose - Tel. 712701

St Athan - Tel. 751010

INR Clinic 

The INR Clinic is run at our main site, Eryl Surgery on Tuesday mornings and Thursday afternoons. The clinic provides regular check-ups with the Health Care Assistant or Practice Nurse providing monitoring for patients on long-term and on lifetime anti-coagulation therapy to measure their INR levels. 

Our clinic is run by our Healthcare Assistant:

Mrs Ceri Bell 

Warfarin is an oral anticoagulant medication which “thins your blood”.

People taking Warfarin need regular monitoring using a blood test called “INR”. This stands for International Normalised Ratio and allows us to maintain the ratio within a set target range. It is performed by a finger prick test with the result available within 2 minutes so that we can adjust the dose of Warfarin accordingly.

There are many factors that can affect the INR ratio including certain medications which are prescribed and those that can be bought over the counter. If you are prescribed Warfarin and have to take any other medication – either prescribed or purchased over the counter – you must tell the prescriber or Pharmacist that you take Warfarin. If you start other medications such as Antibiotics it is important you check your INR levels before and after your course. 

Similarly, certain foods and drinks can affect the way your Warfarin is metabolised and cause the ratio to fall or rise.

A list of these foods can be obtained by visiting this website: NHS Choices- Anticoagulants

Further information can also be sought during your clinic appointment.

It is vital that you attend your appointment as instructed by the HCA or clinic nurse. 

We understand other commitments can arise and we always try our upmost to accommodate and re-schedule your appointment within a clinic time that suits you. At the clinic you will be provided with an Anticoagulation Log Book in order to keep track; keep  an up to date record of your INR readings and what dose you need to take until your future appointment date. 




Quick Links


Llantwit Major - Station Road, Llantwit Major, Vale of Glamorgan, CF61 1ST Telephone (01446) 793444

Rhoose - Rhoose Medical Centre, 54 Fontygary Road, Rhoose, CF62 3DS Telephone Rhoose 712701

St Athan - Chapel Surgery, Gileston Road, St Athan, Nr Barry, Vale of Glamorgan, CF62 4PZ Telephone 751010