Blood tests


At the Royal Free London adults can have blood tests at Barnet Hospital, Chase Farm Hospital, Edgware Community Hospital and the Royal Free Hospital.

Find out about children's blood tests or read on for further information about adult blood tests at each of our hospitals.

The Jnetics Jewish genetic disorder clinic is located at Barnet Hospital - book a Tay Sachs blood test.

How we are keeping you safe during the COVID-19 pandemic

To ensure social distancing, please arrive no earlier than 10 minutes before your appointment.

When you arrive for your appointment, we will take your temperature and ask whether you or anyone in your household has symptoms of coronavirus. 

When you visit, please keep your distance from others and wear your own face covering which covers your nose and mouth. If you are not wearing one, we will give you a mask. The face covering or mask must be worn at all times while you are in hospital. You can read more about the steps we are taking to keep you safe here.

What happens at a blood test?

At the Royal Free London, we might use a blood test to diagnose and treat a number of conditions, such as diabetes, thyroid problems, signs of kidney damage, or prostate cancer or ovarian cancer.

The blood test service at our hospitals works on an appointment basis. We encourage all patients to book an appointment.

After your blood test you may have a small bruise. This is normal and will go down after a few days in the way any other bruise does.

Who will take my Royal Free blood test?

Your blood sample will be taken by a phlebotomist who is specially trained to perform your test. Phlebotomists will not discuss your blood results or your medical condition.

If you have questions about your blood test or need help understanding blood test results, please speak to your doctor or consultant, or nursing staff at the clinic.

Download our leaflet about blood tests.


Do you have an appointment?

Find your ward

  • Barnet Hospital

    Wellhouse Lane
    EN5 3DJ

    Adults over 16

    Patient enquiries (adults): 020 8375 1471

    Book an appointment online or call us to make your appointment on 020 8375 1471. The adult clinic is open Monday-Friday from 9am-4.45pm. We do not open on bank holidays.


    The children clinic is closed until further notice

    We do not open on bank holidays.

  • Chase Farm Hospital

    The Ridgeway
    EN2 8JL

    Patient enquiries (adults and children): 020 8375 1471


    The adult clinic is open:

    • Monday-Wednesday: 8am-7.30pm
    • Thursday: 8am-6.30pm
    • Friday: 8am-4pm

    We do not open on bank holidays.


    The children's blood test clinic at Chase Farm Hospital runs at the following times:

    • Tuesday 8.30-11.30am
    • Wednesday 8.30-11.30am
    • Thursday 8.30-11.30am
    • Friday 8-11.30am

    We do not open on bank holidays.

  • Chestnut Community Hospital

    King Arthur Court
    Waltham Cross
    EN8 8XN

    Patient enquiries: 01992 622157

    We do not open on bank holidays.

  • Edgware Community Hospital

    Burnt Oak Broadway
    HA8 0AD

    Patient enquiries (adults): 020 8375 1471
    Patient enquiries (children): 020 8732 6331

    We do not open on bank holidays.

  • Finchley Memorial Hospital

    Granville Road
    Greater London
    N12 0JE

    Patient enquiries: 020 8349 7460

    We do not open on bank holidays.

  • Royal Free Hospital

    Pond Street
    NW3 2QG

    Patient enquiries: 020 7794 0500

    The adult clinic is open

    • Monday to Friday, from 7.30am-8pm
    • Saturday from 7.40am-1pm

    The children clinic is closed until further notice.

    We do not open on bank holidays.


Referral details

For all children under 10 years old an appointment must be made.

If the blood test is for a child or teenager (up to 16 years old and in full time education), then please go to our paediatric outpatient department.

Patient leaflets

Read our patient leaflets and publications

View all patient resources