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Bleeding and Clotting Disorders

Thin blood

09/02/2008

Question:

When pin pricking my finger recently, I noticed that my blood appeared very watery and thin, and ran down my finger. It also took around 5 minutes for this pin prick to stop bleeding. In the past I have done my blood pressure and it has been 130/80... could this be the cause? Or what else could be causing this?

Answer:

Judging the relative "thinness" of blood from a pin prick does not really do a good job of estimating your body's clotting function. Symptoms such as easy bruising and bleeding of the gums spontaneously tend to get our attention more. If you are concerned at all, you should discuss these issues with your physician who can draw the appropriate lab testing if they feel there may be a problem.

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Response by:

Spero R Cataland, MD Spero R Cataland, MD
Associate Professor of Clinical Internal Medicine
College of Medicine
The Ohio State University