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Welcome to WarfarinDosing.org, a free Web site to help doctors and other clinicians
begin warfarin therapy by estimating the therapeutic dose in patients new to
warfarin. This site is supported by the Barnes-Jewish Hospital at Washington University Medical Center, the NIH, and donations. Estimates are based on clinical factors and (when available) genotypes of two genes: cytochrome P450 2C9 (CYP2C9) and vitamin K epoxide reductase (VKORC1). 

Recommendations on this Web site are based on data from over 1000 patients.
Once information is entered onto the next page, the initial estimate of therapeutic dose explains 53% of the variability in a warfarin dose. If you return to the Web site and enter an INR value after 3 and/or 4 warfarin doses, the dose refinement is even more accurate.

Initial Information
 
  Is this patient new to WarfarinDosing.org?

        

  Click here to go to Clinical Trial Home.
  Warfarin doses taken so far*:
  Warfarin doses taken so far*:
  Patient Code* :
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©Washington University in St. Louis.

  Caution - Investigational Device. Limited by Federal(or United States) law to investigational use.

Terms of Use : This web site is not intended to substitute for care by a licensed healthcare professional. This Web site is provided on an “as is” basis only and without warranty or representation (whether express or implied) as to its accuracy or reliability. Neither Dr. Brian F. Gage, Washington University, Kimo Migo LLC and Nous Cloud LLC, the NHLBI, or any sponsor are responsible for or accepts liability for any direct or indirect loss or damages arising from or connected to the use of this information.

Commercial use of this Web site and any part thereof, including the dosing algorithm contained herein, is prohibited without written authorization. Supported by the NIH (R01 HL HL097036 and HL074724) and the American Heart Association. If you would like to make a donation to support this non-profit site, click here.

Web site created by Kimo Migo LLC and Nous Cloud LLC.