


Factor V Leiden is a genetic variant that causes an increased risk of thrombosis, or blood clots. The Polymerase Chain Reaction (PCR) test detects the presence of this mutation in the DNA, allowing determination of whether an individual has an increased risk of blood clotting disorders.
Important: For this test, you will need to complete a consent form as required by law, in which you give permission for genetic research, which the Factor V Leiden test effectively is, as it checks for a mutation.
Testing for Factor V Leiden is recommended for individuals with a personal or family history of deep vein thrombosis, pulmonary embolism, or unexplained miscarriages. It is also useful for those who want to know their risk of blood clots, especially if they are considering hormone therapy or surgery that may increase the risk of thrombosis.
The presence of the Factor V Leiden mutation indicates an increased risk of abnormal blood clotting. It assists in determining the necessary level of preventive measures or treatments to minimize the risk of blood clots.
A positive result means that the person is a carrier of the Factor V Leiden mutation, which increases the risk of thrombosis. This may require adjustments in lifestyle, medical monitoring, or preventive treatment to reduce the risk of blood clots.
A negative result means that the tested person does not carry the Factor V Leiden mutation. While this reduces the risk of thrombosis related to this specific genetic mutation, it does not exclude other possible causes of increased clotting risk.
Answers to what people usually want to know.
After ordering we generate a referral letter and email you the instructions. You pick a collection point yourself and book an appointment there. Blood is drawn at the location, processed at the lab, and your result arrives digitally.
Usually very quickly. Collection points typically have slots within a few days, sometimes even same-day. It depends on how busy the location is. For a few specialist analyses we first ship collection materials, which takes a bit longer.
At most collection points yes. Some accept walk-ins. This is clearly indicated per location. You choose the location that works best for you.
Factor V Leiden; thrombosis risk.



€125.00EUR
Genetic Testing - Additional Form Required
For genetic testing, it is legally required to complete an additional consent form. This form is included with your test kit and must be completed and returned together with your sample.
That depends on the test. Whether fasting is required, and from what time, is clearly stated in the instructions you receive after ordering. No surprises at the counter.
It varies per analysis: from same-day to a few working days. Standard values often come back quickly; analyses that go to an external lab can take a bit longer. You get an email with a link to your digital result, including a short explanation per value.
We work with 1,000+ collection points across the Netherlands. After ordering you'll see which locations near you are available and you pick where you'd like to go.
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