Preparing for a blood test properly can help ensure you get accurate results and have a smooth, stress free experience. Whether you’re going for a routine private blood test in Milton Keynes or a specific health screening, a little preparation goes a long way. In this guide, we’ll cover everything you need to know before your blood test, from fasting guidelines to coping with nerves. We’ll also answer common questions about private blood tests, including how much a private blood test costs in the UK and what to expect at our Milton Keynes clinic.
Preparation Tips for the Day Before Your Blood Test

Fasting if required: If your blood test requires fasting, you will typically need to go without food (and any drinks besides water) for 8 to 12 hours before your appointment. Common tests that usually require fasting include cholesterol (lipid profile) checks, blood glucose tests, and certain metabolic panels.
During a fasting period, do not consume any food, alcohol, or even chewing gum, as these can all stimulate digestion and potentially skew your results. You should drink water though – staying hydrated is encouraged (more on that below).
Blood Tests That Require Fasting
Some blood tests are more likely to require fasting to ensure accurate readings. These often include:
-
Glucose tests: Such as fasting blood sugar levels for diabetes screening.
-
Lipid profile: Checks cholesterol and triglycerides, which can be affected by recent meals.
-
Liver function tests: Eating or drinking alcohol can impact liver enzyme levels.
-
Basic or comprehensive metabolic panels: These assess multiple substances in the blood (sugar, electrolytes, etc.) where food intake might alter values.
If you’re unsure whether your test needs fasting, contact the clinic or refer to your test information ahead of time. It’s better to double check than to have to reschedule a test because you weren’t properly fasting.
Preparation Tips for the Day of Your Blood Test
The day of the test has arrived. Here are some tips to follow on the morning of your blood draw to help things go smoothly:
Keep drinking water: Continue to drink water when you wake up (unless you’re already at your limit from fasting). Being well hydrated on the day of the test is just as important as the day before. Water keeps your blood volume up and helps fill your veins.
Avoid coffee and tea before your test: If you’ve been fasting, do not drink coffee, tea, or other caffeinated beverages that morning. Coffee and tea can act as mild diuretics (making you lose water) and might dehydrate you a bit. They can also temporarily raise your heart rate or blood pressure. If you really need a morning beverage and you’re not fasting, plain water is best. If you must have something warm, consider a small amount of plain herbal tea (without sugar or milk).
Have a light breakfast if allowed: If your test does not require fasting, it’s a good idea to eat something light a couple of hours before the appointment. A small meal or snack like toast or fruit about 1–2 hours beforehand can help keep your blood sugar stable during the test. Avoid anything too rich or fatty right before the test, as that could make you feel queasy or potentially affect certain blood measurements.
Dress appropriately: Wear short sleeves or a top with sleeves that roll up easily. This makes it simpler to access your arm. Tight clothing or sleeves that are hard to roll up could add a bit of hassle.
Arrive calmly and on time: Plan to get to the clinic or lab a little early. Rushing can increase your stress, which isn’t helpful right before a medical procedure. Arriving 10–15 minutes early gives you time to check in, fill out any paperwork, and sit for a moment to relax. If you’re visiting Vitalscan in Milton Keynes, our clinic is easy to find in Central Milton Keynes (near the train station), with parking available.
Bring necessary documents and a snack: If this blood test was ordered by a doctor, ensure you have any forms or a referral letter if provided (for private tests at Vitalscan, you usually won’t need a GP referral, but do bring any confirmation of your appointment). It’s also wise to carry a form of ID and, if using insurance (note: at Vitalscan all tests are self pay), have your payment method ready.
What to Expect During a Blood Test
Coping with Nervousness or Needle Anxiety
How Long Will It Take to Get Blood Test Results?
After your blood sample is taken, it has to be analysed in a laboratory. The waiting time for results can vary depending on the tests being done:
Most common test results: For many standard blood tests (such as a full blood count, thyroid function, cholesterol panel, etc.), results are often available quite quickly. In a private clinic setting like Vitalscan, many of these results come back within 24 to 48 hours.
Specialised tests: Some blood tests that are more specialised or complex can take longer. For example, certain hormone tests, genetic or immunology panels, or tests for very rare conditions might be sent to specialist laboratories.
How you receive results: At our Milton Keynes private clinic, we will inform you how results will be delivered. You’ll receive an email or secure portal message with your results and a doctor’s commentary, or we may call you to discuss if preferred.
For NHS blood tests, the timeline can be a bit longer, often a few days and in some cases up to a couple of weeks (especially if no news is often considered good news). One advantage of opting for a private blood test is that you often get the results faster and with more direct communication. We know waiting for results can be nerve wracking, so we prioritise speed and accuracy.
How Much Does a Private Blood Test Cost in the UK?
Private Blood Tests FAQs
Book Your Private Blood Test in Milton Keynes
We make the blood test process as straightforward as possible. From easy booking, to a quick and professional blood draw, to fast results and follow up.
If you have any more questions about blood tests or want to book a private blood test in Milton Keynes or the surrounding area, feel free to contact our team.
Book Private Blood Test or call 01908 755556 if you’d prefer to speak to someone directly.
Table of contents
- MRI Scans
- Blood Tests
- Preparation Tips for the Day Before Your Blood Test
- Blood Tests That Require Fasting
- Preparation Tips for the Day of Your Blood Test
- What to Expect During a Blood Test
- Coping with Nervousness or Needle Anxiety
- How Long Will It Take to Get Blood Test Results?
- How Much Does a Private Blood Test Cost in the UK?
- Private Blood Tests FAQs
- Book Your Private Blood Test in Milton Keynes
- Patient reviews
