Factor V Leiden; thrombosis risk.
Only on medical indication
We offer this test only on a specific clinical question, not as preventive screening. A written referral from a BIG- or AGB-registered doctor or therapist is required (name, registration number and a brief motivation).
You place the order below as usual; we contact you to align the referral before we start your test.
Genetic testing — laboratory consent form
For this genetic test our laboratory (Medizinische Laboratorien Dr. Stein + Kollegen) requires a completed consent declaration in accordance with the German Gendiagnostikgesetz (GenDG). The form is included with the kit and can also be downloaded below in advance.
Download consent form (PDF)Blood collection at collection point
After your order you receive instructions by email
Make an appointment at a collection point near you
Blood collection at 1,000+ locations across the Netherlands
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.
This test is included in Dutch healthcare guidelines and is regularly used for its respective indications.
Rationale for this test
Deze test is een gevestigde genetische bepaling voor het opsporen van de Factor V Leiden mutatie, een erkende erfelijke risicofactor voor trombose. De test wordt wereldwijd gebruikt in de klinische praktijk bij patiënten met een persoonlijke of familiegeschiedenis van veneuze trombo-embolie. De PCR-methode is gevalideerd en wordt in kwaliteitscontrole-studies met hoge nauwkeurigheid uitgevoerd.
International scientific literature
We recommend consulting these independent sources before ordering a preventive health check.
Brochure on preventive health checks: careful choice, reliability, pros and cons, checklist.
Independent information about preventive health checks from the National Institute for Public Health and the Environment.
Reliable patient information about illnesses and complaints from Dutch GPs (NHG).
Public-facing website of the Dutch Society for Clinical Chemistry with explanations of blood tests and laboratory values.
Practical information
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.
Often within a few working days. How soon you can be seen depends on how busy the location is and the type of analysis. For 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.
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 receive your laboratory report securely by email. It lists the measured values, units, reference ranges and any flags added by the laboratory.
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.
“Very positive experience”
From ordering to having my blood drawn, everything went smoothly and was well organised. I really appreciated being able to visit a blood collection location in my own town so quickly. I received clear instructions beforehand, and the results arrived promptly by email too. Very satisfied!
“Good communication”
This company responds to questions thoroughly and promptly. The entire process, from requesting the test to having blood drawn and receiving the results, runs very smoothly. Overall, I am very satisfied!
“Wide choice of tests, fast and affordable”
You can choose the tests yourself. Fast delivery and processing, clear instructions and affordable.
“I am satisfied with the service”
I received a referral by email, just like from a GP. I did not have to send anything by post and could quickly visit a local blood collection centre. The results were fast and clear. The price was good, not too expensive, and all messages were secure.
“A very good experience”
A very good experience! I received quick answers to my questions, a custom blood test was put together, everything was arranged smoothly, and I could have my blood drawn by a healthcare professional nearby. The results were available within a few days. In short, very satisfied!
“Very good customer service”
The customer service is very good. I had a complex request, which caused an issue at the blood collection centre. Customer service resolved it very well. They also offer a wide range of tests at a reasonable price.
“Everything was well organised”
Everything was well organised. The products were delivered within a few days and, after sending in the samples, the results arrived within a few days too. Communication and information throughout the process were clear and friendly.
“Fantastic service”
Fantastic service! Very good customer service that responds quickly and thinks along with you. Good prices. I will definitely use BloedCheckup's services again.
“Very happy to have found this business”
Very happy to have found this business. We need to check our blood more often :) The process was easy. They sent me the kit at home, then I had to go to a clinic with the papers and they knew what they had to do. I got the results in less than a week.
“Smooth process and good support”
Amazing website experience. I ordered various tests for 2 people. We went to one of the supported centers and took samples. Also after the results were ready, I needed a letter from the laboratory and they prepared the letter for me in no time. Definitely recommended.
“Amazing service!”
Received a packet with everything needed, went to a walk in clinic (Amsterdam DC Clinic) where my blood was drawn and I was out the door within 5 minutes, and then after posting the samples, received results 2 days later. Results were easy to understand as well. Amazing service, would highly recommend!
“Great customer service”
I ordered a test through bloedcheckup.nl but later realized I no longer needed it. I contacted their support team, and they were very quick, responsive, and helpful in handling my cancellation. The whole process was smooth and efficient. Great customer service!