Blood thinners: why you stop them before surgery
Anticoagulants and antiplatelet drugs increase bleeding during and after surgery, so clinics often ask about pausing them.
Anticoagulants and antiplatelet drugs increase bleeding during and after surgery, so clinics often ask about pausing them. That decision belongs to the doctor who prescribed them, never to you and never to the surgical clinic alone.
Why do blood thinners matter for hair transplant surgery?
A hair transplant creates thousands of small wounds and a donor wound, and drugs that reduce clotting increase bleeding during the procedure, make the surgical field harder to work in, and increase oozing and bruising afterwards. They also raise the risk of a haematoma, a collection of blood under the skin.
Why isn't the decision to stop blood thinners the clinic's to make alone?
Blood thinners are prescribed to prevent serious events such as stroke, deep vein thrombosis, pulmonary embolism or stent clotting, and stopping them carries risk that often exceeds a cosmetic procedure's bleeding risk. Only the prescribing doctor knows what stopping would mean, so a clinic instructing you to stop without consulting them is a warning sign.
What should you disclose to your clinic about blood-thinning medication?
Disclose prescribed anticoagulants, including warfarin and the direct oral anticoagulants, antiplatelet drugs including clopidogrel and low-dose aspirin, regular NSAIDs, which affect platelet function, supplements with anticoagulant effects such as fish oil, vitamin E, ginkgo and garlic extracts, and any bleeding disorder or family history of one.
- Prescribed anticoagulants, including warfarin and the direct oral anticoagulants
- Antiplatelet drugs, including clopidogrel and low-dose aspirin
- Regular NSAIDs, which affect platelet function
- Supplements with anticoagulant effects, including fish oil, vitamin E, ginkgo and garlic extracts
- Any bleeding disorder or family history of one
How should the decision to pause blood thinners before surgery be handled?
Your surgeon and your prescribing doctor communicate, a decision is made jointly, and you are given written instructions. If the blood-thinning medication cannot safely be paused, the options are to modify the procedure, plan a smaller session, or decline surgery altogether, which is a legitimate outcome rather than a failure.
Our page on surgery with medical conditions covers the wider assessment.
Sources
- Bernstein RM, Rassman WR. Graft Anchoring in Hair Transplantation. Dermatologic Surgery, 2006;32(2):198-204. pubmed.ncbi.nlm.nih.gov/16442039
This article summarises published research. It is general educational information, not medical advice, and it is not a recommendation to start, stop or change any medication. Prescription drugs carry contraindications and interactions; discuss them with a doctor who knows your medical history.
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