Thrombophilia The Hidden Threat in Pregnancy

The path to parenthood can be challenging for some couples — not due to obvious factors, but because of unseen barriers like thrombophilia. Although this may be an unfamiliar term to many, its importance in achieving and maintaining a successful pregnancy is crucial. Prevention, accurate diagnosis, and specialized care are the foundation upon which we build successful pregnancies at FertUlity.

What Is Thrombophilia?

Thrombophilia is a disorder that makes the blood more prone to forming clots — blood accumulations that form when blood coagulates normally to stop bleeding. Clots become dangerous when they form without injury or stay where they shouldn't.

In the general population, symptoms may never appear. However, in reproductive medicine, the presence of a thrombophilic disorder can dramatically alter the course of a pregnancy — especially when it causes implantation failure, recurrent miscarriage, or endometrial complications. Thrombophilia must be approached with precision and scientific rigor, as its diagnosis can prevent pregnancy loss and create optimal
conditions for a healthy pregnancy.

When We Suspect Thrombophilia

The presence of thrombophilia doesn’t necessarily mean that a pregnancy will fail. However, in some cases, it must be systematically investigated.

Specifically, attention is paid in cases of:

Recurrent miscarriages, especially in the first trimester

Unexplained intrauterine growth restriction

Implantation failure in IVF treatments

Personal or immediate family history of thrombotic events

Proteinuria or pregnancy-induced hypertension in a previous pregnancy

Autoimmune diseases such as lupus or Sjögren’s syndrome

Which Tests Are Performed and How

Thrombophilia disorders are classified as inherited or acquired. The most well-known acquired form is antiphospholipid syndrome (APS), which is associated with a high rate of miscarriages.

The most common tests include:

For acquired thrombophilia: Lupus anticoagulant, anticardiolipin antibodies (aCL), anti-β2-Glycoprotein-I

For inherited thrombophilia: Factor V Leiden, prothrombin mutation G20210A, antithrombin III, protein S, MTHFR mutations

Testing is done via a simple blood draw at a specialized laboratory and does not require hospitalization. If there is a strong suspicion or relevant history, test results are always interpreted in collaboration between a hematologist and a gynecologist to ensure a comprehensive approach.

What the Therapeutic Approach

Managing thrombophilia is a personalized process. Treatment depends both on the type of thrombophilic disorder and the woman’s medical history, especially if there have been past miscarriages or pregnancy complications.

In cases of inherited thrombophilia or antiphospholipid syndrome, preventative treatment usually involves low-molecular-weight heparin, which reduces clot formation, and a low dose of aspirin, which improves placental blood flow and provides complementary support. This therapy may begin during conception attempts or after pregnancy is confirmed and typically continues into the final weeks of pregnancy.

At the same time, close monitoring through bloodwork and ultrasounds ensures proper placental blood supply and healthy fetal development. In more complex cases — or when thrombophilia coexists with other underlying conditions — specialized treatments or dosage adjustments may be added, always under medical supervision.

The main goal is not merely to prevent complications, but to create the ideal endometrial environment for pregnancy to begin and progress safely to term.

Frequently Asked Questions About Thrombophilia

Can thrombophilia be hidden?

Yes. Many women live with thrombophilia without any symptoms until miscarriage or pregnancy complications arise — such as placental abruption or intrauterine growth restriction. That’s why many seek answers only after experiencing one or more pregnancy losses.

Is thrombophilia hereditary?

Some types of thrombophilia are indeed inherited. These are genetic mutations passed from parent to child, such as Factor V Leiden, the prothrombin mutation (G20210A), or deficiencies in antithrombin, protein S, or protein C. If there’s a family history of thrombosis or miscarriage, genetic screening is recommended.

If thrombophilia is diagnosed, can I still have a successful pregnancy?

Absolutely! Thrombophilia doesn’t mean you can’t have a child — it means special preparation and monitoring are needed. With proper preventive therapy and regular checkups, most women complete their pregnancies successfully.

What is antiphospholipid syndrome?

It is an autoimmune disorder in which the immune system produces antibodies against phospholipids — substances crucial for blood clotting. These antibodies can cause microthrombi in the placenta, affecting fetal development and increasing the risk of miscarriage.

Our Doctors

In an era where fertility requires knowledge, care, and substantial guidance, FertUlity is not an impersonal clinic. It is two people who look you in the eye and accompany you step by step on the journey you dream of.

Dr. Maria Oikonomou Obstetrician – Gynecologist

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Dr. Chrysostomos (Makis) Papadopoulos Obstetrician – Gynecologist, MD, PhDc, MIC I

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