Fasting Blood Test

Home Services Blood Tests

Fasting Blood Tests

It is common for people to ask which blood tests they need to fast for before providing the blood sample. The main tests that require fasting are the blood glucose test (which can be used to diagnose diabetes) and the cholesterol blood test. Iron levels are also ideally checked after fasting.

If you require a fasting blood test it is advisable to have it first thing in the morning after fasting overnight. Then have your breakfast after the test. Many patients choose to book their GP appointment for a different time of the day. Your doctor can then discuss your symptoms with you and if a fasting test is required they will arrange the test for you.  This can be carried out at our partner laboratory in central London at a time of your convenience.

Book an appointment online today

How it Works

1. BOOK AN APPOINTMENT

Choose from any of our 7 London blood test clinics, open 7 days

2. MEET WITH A DOCTOR

They can advise on suitable tests and take a blood or urine sample

3. RECEIVE YOUR RESULTS

You will be emailed your results, analysis and recommendations

4. FOLLOW UP (OPTIONAL)

Follow up consultation only £25 for further treatment or advice

Related Tests

Test Cost Results
DL10 Cardiovascular Risk Profile 1 £259 3 working days

Cholesterol
Triglycerides
HDL Cholesterol
LDL Cholesterol
Non-HDL Cholesterol
Apolipoprotein A
Apolipoprotein B
Lipoprotein (a)
hsCRP
Lp-PLA2 (PLAC) Test

DL11 Cardiovascular Risk Profile 2 £345 3 working days

Cholesterol
Triglycerides
HDL Cholesterol
LDL Cholesterol
Non-HDL Cholesterol
Apolipoprotein A
Apolipoprotein B
Lipoprotein (a)
Fibrinogen
hsCRP
Lp-PLA2 (PLAC) Test
Homocysteine

Cholesterol £21 Same day (if by 1pm Mon-Fri)
Diabetic Profile 1 £49 1 working day

Glucose
HbA1c

Diabetic Profile 2 £97 2 working days

Glucose
HbA1c
Microalbumin

DL1L Biochemistry Profile plus HDL Cholesterol, LDL Cholesterol and Non-HDL Cholesterol £42 Same day (if by 1pm Mon-Fri)

As DL1 plus HDL Cholesterol, LDL Cholesterol and Non-HDL Cholesterol

DL2L Biochemistry (24 Parameters) & Haematology Profile plus HDL Cholesterol, LDL Cholesterol and Non-HDL Cholesterol £60 Same day (if by 1pm Mon-Fri)

As DL2 plus plus HDL Cholesterol, LDL Cholesterol and Non-HDL Cholesterol

DL6L General Well Person Profile plus HDL Cholesterol, LDL Cholesterol and Non-HDL Cholesterol £116 Same day (if by 1pm Mon-Fri)

As DL6 plus plus HDL Cholesterol, LDL Cholesterol and Non-HDL Cholesterol

Glucose £22 Same day (if by 1pm Mon-Fri)
Lipid Profile £43 Same day (if by 1pm Mon-Fri)

Triglycerides
Cholesterol
HDL Cholesterol
LDL Cholesterol
Non-HDL Cholesterol

Triglycerides £25 Same day (if by 1pm Mon-Fri)
Well Man Profile plus HDL Cholesterol, LDL Cholesterol and Non-HDL Cholesterol £150 Same day (if by 1pm Mon-Fri)

As DL7 plus plus HDL Cholesterol, LDL Cholesterol and Non-HDL Cholesterol

Well Woman Profile plus HDL Cholesterol, LDL Cholesterol and Non-HDL Cholesterol £150 Same day (if by 1pm Mon-Fri)

As DL8 plus plus HDL Cholesterol, LDL Cholesterol and Non-HDL Cholesterol

This is only a small sample of the many blood tests which DocTap provide. Our expert doctors can advise you during your consultation on the most appropriate tests for your condition. View all blood tests.

Book a Fasting blood test now

DocTap is featured in

Why Choose DocTap?

DocTap seek to provide the most convenient, fastest, effective and best value private blood testing service in London. With 12 blood test centres across London and same day appointments available 7 days a week, it has never been easier to book a fasting blood test. We are proud to partner with The Doctors Laboratory (TDL) which has a worldwide reputation for excellence.

Unlike many blood test clinics, you will see a UK accredited GP who will be able to offer their expert option on what test is most appropriate for you. Your results will also be accompanied by a written analysis of what they mean and what your doctor advises you to do next. Should additional treatment be required, or if you simply wish to discuss the results in more detail, then you can book a 15 minute follow up consultation for only £25. This can either be at any DocTap clinic or over the phone. When booking your follow up consultation you can request to see you original doctor if you wish (subject to their availability).

Should you require a full consulation before deciding to have a fasting blood test then there may be insufficient time to also take a blood sample in the appointment. In that case you can choose to either go to our walk in laboratory by Oxford Street (£15 phlebotomy fee applies) or to make a second appointment for the doctor to take the bloods.

Fasting blood test london
Advice from expert UK doctors
12 London clinics, open 7 days
Blood tests & screens from £14
Fast results, many same day
Includes doctor's report and plan
Follow up with GP (£25, optional)
World class partner lab (TDL)
No sales incentives for doctors

Is it always necessary to fast?

The glucose test is used to diagnose diabetes but increasingly a different  blood test called the HbA1c test is used, this doesn't require fasting.

A cholesterol check looks at the total level of cholesterol, the 'good cholesterol' (HDL) and 'bad cholesterol' (LDL). Your doctor will advise whether you need to fast for a cholesterol check. Fasting is necessary if your doctor wants to include a check for a different kind of fat called triglycerides. 

See a GP for a Fasting blood test now
97% of the 3952 patients who have reviewed DocTap would recommend us to their friends and family.
How would you rate your doctor?
(2881 reviews)
How would you rate the booking process?
(2873 reviews)
How would you rate the premises?
(2854 reviews)
private-doctor-london

Most recent reviews

same day Fasting blood test

Book a Fasting blood test Today

Our doctors are available now and can perform diagnosis and blood tests for over 1000 conditions. To see a GP regarding a Fasting blood test or for any other reason book an appointment now and start feeling better right away.

Book online now
Doctors Appointments from £29