In today's developing world, how do we define a "developing country"? What level of effort and resources is invested in diagnosis, patient care, and research in those countries that we define to be developing? In particular, what is the situation with respect to Molecular genetic testing in these countries? How much has been achieved to date, and what are the challenges to further achievements? This article describes the Current status, challenges, and future hopes with respect to molecular genetic testing in hemostasis and thrombosis from the perspective of experts from three Countries: Brazil, Colombia, and It-an. These individuals have lived and practiced genetic testing in their Countries and have also had the experience to work and/or interact with the developed world to enable all appreciation of the difference.346569578