How to Get a Blood Test in the UK: NHS vs Private Options in London
Reviewed by Dr Lauren Holland • Marylebone Diagnostic Centre, 73 Baker Street
Private blood tests in central London • Results in 24–42 hours • QC-validated laboratory standards
Westminster residents receive 20% off all blood tests.
Blood tests are one of the most important tools for understanding your health. They can detect early signs of illness, monitor chronic conditions, check nutrient levels, and help explain symptoms such as fatigue, hair loss, low mood, weight changes, infections or hormonal issues.
Across the UK, thousands of people search each day for:
- “Can you get a blood test for free in the UK?”
- “How much does a full blood test cost?”
- “How do I get a full blood test quickly?”
- “Where can I do a blood test in London?”
This guide answers these questions clearly and explains how testing works on the NHS and privately.
Can You Get a Blood Test for Free in the UK?
Yes – but only through the NHS and only when a GP or hospital doctor believes it is medically necessary.
Free NHS blood tests are typically offered for:
- Symptoms such as fatigue, pain, infection or weight loss
- Monitoring long-term conditions (diabetes, thyroid disorders, anaemia)
- Medication monitoring
- Emergency care
- Hospital-based investigations
However, NHS capacity is under pressure. Many people experience:
- Long waiting times
- Restricted testing options
- Difficulty accessing routine appointments
- Limited choice of tests
- Delayed results in some areas
This is why many people in London now choose private blood testing to access same-day appointments, faster results and more detailed profiles.
How Much Does a Full Blood Test Cost in the UK?
Private blood test prices vary depending on:
- Number of markers
- Type of profile
- Lab costs
- Turnaround time
- Additional reviews or consultations
Typical price ranges across London:
- Basic blood test: £40–£80
- Thyroid or hormone panel: £120–£150
- Advanced wellness profile: £150–£300
- Full body blood screening: £250–£600
At Marylebone Diagnostic Centre, tests are priced transparently with results available in 24 -42 hours.
Westminster residents receive 20% off all tests.
How to Get a Full Blood Test in the UK
There are two main routes:
Through the NHS (Free)
To get NHS testing, you must:
- Contact your GP
- Explain your symptoms
- Request a test
- Be approved by the GP
NHS blood tests are free but often limited in scope. They typically focus on what is medically necessary rather than full health screening.
Common limitations include:
- No vitamin D unless deficiency risk is proven
- No hormone panel unless clinically justified
- No fertility hormone testing
- No full wellness panels
- Long waits for non-urgent tests
Privately (Paid)
Private testing offers:
- Same-day appointments
- Detailed wellness profiles
- Hormone testing (male & female)
- Iron, vitamin D, B12
- Thyroid, diabetes, liver and kidney screening
- Infection and immunity profiles
- Fertility blood tests
- Specialist panels
- Rapid results
- No GP referral required
This is often chosen when:
- You want fast answers
- You want more detailed information
- Symptoms have been ignored or misunderstood
- You want annual health screening
- You have private insurance
- You prefer private, discreet care
At Marylebone Diagnostic Centre, all samples are processed under QC-validated laboratory standards, ensuring accuracy and reliability.
Where Can I Get a Blood Test in London?
There are several options:
Your NHS GP Practice
Free but may involve long waits.
NHS Walk-In Centres
Some offer blood tests, but availability varies widely.
Private Clinics (Fastest Option)
In central London, private clinics offer the most convenient access.
Marylebone Diagnostic Centre provides:
- Same-day blood tests
- Results in 24–42 hours
- Female and male hormone profiles
- Wellness and fatigue testing
- Infection and immunity panels
- Fertility tests
- Cardiac risk testing
- Thyroid and metabolic health screening
- Private rooms
- A calm, modern environment
- Expert clinical review by Dr Lauren Holland
Located at 73 Baker Street, W1U 6RD, 5 minutes from Baker Street Tube.
What Tests Are Most Popular in London Right Now?
Vitamin D, B12 and Iron
For fatigue, low mood, hair concerns, or low immunity.
Thyroid Panel
For weight changes, anxiety, and energy problems.
Full Wellness Blood Profile
For annual checks, general health concerns or preventative screening.
Female / Male Hormone Profiles
For cycle changes, fertility questions, libido concerns or menopause.
Cholesterol + Diabetes Screening
Important for long-term cardiovascular health.
Infection & Immunity Testing
For ongoing symptoms or recent illnesses.
Do I Need Symptoms to Get a Blood Test?
No. Many people in London choose preventative testing to monitor:
- Energy levels
- Stress and burnout
- Sleep quality
- Hormone balance
- Metabolic health
- Immunity
- Fertility
Early detection is one of the strongest predictors of long-term health.
Book a Private Blood Test in Central London
Marylebone Diagnostic Centre
73 Baker Street, London W1U 6RD
Monday–Saturday, 08:00–16:00
Call: +44 7495 970109
Westminster residents enjoy 20% off all blood tests.
