The Phlebotomy Departments based Guy's and St Thomas' and King's College NHS Foundation Trusts, provide blood tests on a walk-in basis. We carry out a wide range of tests including testing for routine tests, lipids, cholesterol, triglycerides, blood sugar levels, malaria and many other routine and urgent tests.
The departments are based on three sites; St Thomas’ and King's main sites, where we see mainly patients who are referred by the hospital or their GP, Guy’s Hospital, where we provide a service primarily for patients who are referred by their GP and a separate service for children aged from 0–15 years at the Evelina department.
St Thomas’ Hospital
Ground Floor, Lambeth Wing. View the map here.
08.30am to 6.00pm - Monday to Friday
Enquiries: 020 7188 4779
4th Floor, Tower Wing. View the map here.
08.30am to 1.00pm - Monday to Friday
Enquiries: 020 7188 4787
King's College Hospital
King's Golden Jubilee, Ground floor near the Patient Transport Lounge. View the map here.
7.30am to 4.45pm - Monday to Friday.
Enquiries: 020 3299 3569
Blood tests for children (under 15)
Blood tests for children (referred by hospitals or GPs) can only be performed at the Evelina Children’s Hospital, which is based on site at St Thomas’ Hospital. View the map here.
Alternative locations for GP patients are:
Dulwich Community Hospital
Preparing for your blood tests
Prior to having your blood test, please ensure you read and follow any instructions given by your doctor, or any instructions that may appear on your blood request form.
- Fasting blood tests – if you are having a test for lipids, cholesterol, triglycerides, gut hormones or fasting blood sugar you must fast. Have nothing to eat or drink other than water for 12 hours before the test. We suggest that this fasting takes place overnight.
- If you are taking any medication please continue to do so, however, only take your medication with water.
Note: If you are referred for Malaria testing and it is outside our normal opening hours, please present directly to the Accident and Emergency Department at St Thomas' Hospital.