As a general rule this surname project is open to males and females born with the surname Macpherson/McPherson, or fairly recent Macpherson ancestry. Please provide the project administrators with a brief description of your Macpherson connections with your request to join this project. There are exceptions to this rule of course and all enquiries are welcome regardless of your name. It is best to become a member of the Macpherson project before ordering a DNA test because group members receive a discount. The join link is listed below, please copy and paste to your browser to order a kit at the discounted price. https://www.familytreedna.com/group-join.aspx?group=McPherson&code=H18973 Many advances have been accomplished in DNA testing for genealogy in the past few years. For males please consider starting with a Y67, Y37 is okay if the extra cost is a barrier, you can always upgrade later. Project admins are always happy to provide advice prior to an order being placed.