Patient Education Blog

Tattoos and Blood Thinners

At times, individuals who are on blood thinners are considering getting a tattoo.  I am not aware of any medical publication assessing the amount of bleeding that were to occur if a patient got a tattoo while on warfarin or other blood thinners. However, some degree of  bleeding is common even in the individual who is NOT on warfarin:  A medical publication reported that the majority (76 %) of 664 army soldiers who had a tattoo reported small to moderate bleeding during the tattooing procedure [ref 1].   In another study, approximately 5 % of nearly 6,00o individuals receiving a tattoo reported some bleeding [ref 2].  I would expect that the bleeding would be even more on blood thinners.   Would the degree of bleeding cause any medical problems? I don’t know.  Would the quality of the tattoo be less as some of the injected pigment may bleed or leak out? I don’t know.  There does not appeasr to be any published report on tattooing in patients on blood thinners.

In view of the lack of data,  I would, at present, advise against getting a tattoo while on warfarin or any  other blood thinner (i.e. warfarin = coumadin®, Jantoven®; Dabigatran = Pradaxa®; Enoxaparin = Lovenox®; Dalteparin = Fragmin®; Tinzaparin = Innoep®).   However, if a patient is very keen on getting a tattoo and is not at very high risk for blood clots, it would be reasonable to discontinue warfarin 5 days prior to getting the tattoo and restarting it the evening of the day the tattooing has taken place, similar to the way warfarin is managed at times of non-major medical and surgical procedures.   In the case of the person on the blood thinner Pradaxa, discontinuation 2 – 2½ days  prior to getting the tattoo (and longer if the person’s  kidney function is not normal) would be appropriate.

(Photo of tattoo taken and published with permission of patient)


1.  Armstrong ML et al. Tattooed army soldiers: examining the incidence, behavior, and risk. Military Medicine 2000;165:135-141.

2.  Klügl I et al. Incidence of Health Problems Associated with Tattooed Skin: A Nation-Wide Survey in German-Speaking Countries. Dermatology 2010;221:43-50.

Last updated: Aug 17th, 2011

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One Response to “Tattoos and Blood Thinners”

  1. Kara says:

    I got a small tattoo on the back of my neck while on Warfarin in July 2011. It did not bleed much at all. I checked my INR that morning and it was 2.2, a little on the low side so I felt it was safe to do. If my INR was over 3.0 then I would have not done it. I’m supposed to be between 2.0-3.0.