Factor V Leiden Test
Private Factor V Leiden Test in London for £198, screening for the common Factor V Leiden mutation with secure emailed results in 2 weeks.
Turnaround time
2 weeks
Biomarkers count
1
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Overview of the Factor V Leiden Test
The Factor V Leiden Test is a specialised genetic test that detects the common Factor V Leiden mutation, an inherited genetic variation affecting the F5 gene. This mutation can alter the normal blood clotting process and is one of the most common inherited thrombophilias in people of European ancestry.
This is a single-biomarker genetic test that measures Factor V Leiden – common mutation. Unlike routine blood clotting tests, this analysis looks for a specific inherited DNA change that remains the same throughout life. Because it is a genetic test, it usually only needs to be performed once.
People may choose this test if they have a personal or family history of blood clots, unexplained venous thrombosis, recurrent pregnancy complications where inherited thrombophilia is being investigated, or if a healthcare professional has recommended screening before certain medical treatments. The test may also be requested before discussing results with a GP, haematologist or other specialist.
Having the Factor V Leiden mutation does not mean a person will definitely develop a blood clot, and many people with the mutation never experience thrombosis. Likewise, a negative result does not exclude all inherited or acquired clotting disorders. Results should always be interpreted alongside symptoms, personal and family history, medications and professional clinical assessment.
What Does the Factor V Leiden Test Check ?
Factor V Leiden – Common Mutation - This test detects the presence or absence of the common Factor V Leiden mutation in the F5 gene. The mutation affects the activity of Factor V, a clotting protein involved in the coagulation process. Identifying this inherited genetic variant may help support the assessment of inherited thrombophilia when interpreted together with your clinical history and other investigations.
Who May Benefit From the Factor V Leiden Test?
This test may be suitable for people who want to:
Investigate a personal history of unexplained blood clots
Assess inherited thrombophilia risk following medical advice
Review a family history of venous thrombosis
Support investigations after recurrent deep vein thrombosis (DVT)
Provide additional information before pregnancy planning where clinically appropriate
Support specialist investigations following recurrent pregnancy complications where inherited thrombophilia is being considered
Monitor inherited clotting risk as advised by a haematologist
Obtain genetic information before discussing results with a healthcare professional
How to Prepare
How to Book Your Factor V Leiden Test in London
Booking your Factor V Leiden Test with London Blood Tests is simple and designed to fit around your schedule.
Choose the Factor V Leiden Test
Select the Factor V Leiden Test online and review the included biomarkers before booking.
Select your sample collection option
Choose a London clinic appointment or request a home visit, depending on availability and location.
Attend your appointment
A trained professional will collect your blood sample safely and efficiently.
Laboratory analysis
Your sample is analysed by an accredited laboratory using validated molecular genetic techniques to detect the common Factor V Leiden mutation.
Receive your results securely
Your results are sent securely by email, ready to review yourself or discuss with a GP, specialist or qualified clinician.
When Will I Receive My Results?
Results are typically available approximately 2 weeks after the laboratory receives your sample.
Once authorised by the laboratory, your report will be sent securely by email.
Turnaround times begin when the laboratory receives the sample rather than when it is collected. As this is a specialist genetic test, processing may occasionally take longer. Results indicating a genetic mutation should be reviewed with a GP, haematologist or suitably qualified healthcare professional.
Understanding Your Results
Your report will indicate whether the common Factor V Leiden mutation has been detected.
Genetic testing methods and reporting standards may vary slightly between laboratories. A negative result does not exclude other inherited or acquired clotting disorders, while a positive result does not automatically mean you will develop thrombosis.
Results should always be interpreted alongside your personal history, family history, age, pregnancy status where relevant, medications, lifestyle factors and other thrombophilia investigations. If you have concerns about your results, discuss them with a GP, haematologist or genetic specialist.
Why Book With London Blood Tests?
Private blood testing in London
Clinic and home visit options available
Specialist individual tests and advanced health panels
Secure results sent by email
Clear pricing before booking
Convenient appointment process
Support with choosing the right test
Suitable for patients who want private testing without a long wait
Private Factor V Leiden Test in London
At London Blood Tests, we offer private Factor V Leiden genetic testing for individuals who want rapid access to specialist laboratory analysis.
Clinic appointments are available alongside home visit options depending on your location and testing requirements. This makes it easy to arrange a private blood test near you with flexible sample collection.
Whether you are investigating a family history of thrombosis, supporting specialist assessment or obtaining laboratory information before speaking with your GP or haematologist, our service provides accredited genetic testing, secure reporting and flexible appointment options.