If your results have not yet been provided to a study, yes, you may withdraw your agreement.
However, please note that when your results are included in a scientific study, your results are uploaded to the NCBI GenBank database as supporting data. Once they are added to the NCBI Genbank database they may not be readily removed. To do so, you will need to contact NCBI Genbank staff.
In addition, although NCBI Genbank staff will make every effort to remove your results, the generated ID will remain in the database, and your results may become part of third party websites beyond the control of Family Tree DNA, the original research team, and NCBI Genbank staff.
Ethics Alert: Only the actual person tested may contribute their DNA test results to scientific research.
Contact: This service is provided as is. Family Tree DNA customer service staff do not provide support for it. They will not be available to answer questions.
Disclaimer: Further, in no event shall the staff and/or consultants of Family Tree DNA or Gene by Gene, Ltd., be liable for any direct, indirect, incidental, special, exemplary, or consequential damages (including, but not limited to, procurement of substitute goods or services; loss of use, data, or profits; or business interruption) however caused and on any theory of liability, whether in contract, strict liability, or tort (including negligence or otherwise) arising in any way out of the use of your complete mtDNA sequence in scientific studies. You decision to disclose your personal genomic information and all consequences of it are strictly yours.