Thrombophilia tests
thrombophilia screen · clotting disorder test · lupus anticoagulant · antiphospholipid antibodies · Factor V Leiden test
This is a group of blood tests from a vein. They check whether you have a higher tendency to form blood clots.
After blood clots, especially at a young age; after repeated miscarriages; or before hormone pills or IVF if clots run in the family.
⏱ Duration: the blood draw takes 5 to 10 minutes; results usually come in 3 to 14 days
Be sure to tell your doctor
How to prepare
- Timing. Some tests give false results right after a clot, during pregnancy, or on certain medicines. Your doctor chooses when to test.
- Food. Usually fasting, 8 to 12 hours without food. Water is fine. Check with the lab.
- Medicines. Never stop blood thinners on your own. Tell your doctor. They will decide.
- The day before. No alcohol and no hard workouts. Do not smoke in the morning.
What to bring
- Your test request form
- Your ID
- A list of your medicines
- Past clotting test results, if you have them
How it goes
- You sit down and rest your arm on the armrest
- A band is tightened above your elbow, and the skin is wiped
- Blood is drawn into several tubes
- The needle comes out, and a cotton pad is pressed on
What you'll feel
- A quick prick, like a pinch
Afterwards
- Press the cotton pad longer if you take blood thinners
- Genetic tests are done once in a lifetime. Other tests are sometimes repeated after 12 weeks
- Discuss the results with your doctor, a hematologist or a gynecologist
Common questions
A thrombophilia gene variant was found. Is it dangerous?
Many of these variants are common and raise the risk only a little. Your doctor will explain what it means for you.
Why repeat the test?
Some antibodies appear for a short time after an infection. If the result is confirmed after 12 weeks, it matters.