Genetic Services

Seattle Sperm Bank is proud to have a strong genetic counseling team. Our three board-certified genetic counselors, Katherine Hornberger, Danielle Young, and Brynn Persky, have over two decades of cumulative expertise in third party reproduction and assisted reproductive technology genetic counseling. They are accompanied by their dedicated genetic counseling assistant, Lupe Martinez. 

Genetics is complicated. Our professionals are here to simplify it for you.

The Genetic Counseling team can help with:

Katherine Hornberger, MS, CGC 

Katherine is a board certified and multi-state licensed genetic counselor who supports recipients, donors, and clinics working with Seattle Sperm Bank. Prior to joining Seattle Sperm Bank, Katherine worked for a large IVF center and a preimplantation genetic testing laboratoryKatherine has gone through a fertility journey of her own and hosts a YouTube channel dedicated to explaining genetic concepts in the world of fertility. With years of experience providing genetic counseling to individuals and couples utilizing donor gametes to build their family, she understands the questions and concerns that can arise regarding donors. Katherine holds a B.S. in Psychology from the University of Wisconsin- Madison and a M.S. in Genetic Counseling from the University of Colorado. 

Brynn Persky, MS, CGC

Brynn is a board certified and multi-state licensed genetic counselor with extensive experience in reproductive and prenatal genetic counseling. Brynn is passionate about the ever-growing field of genetics and finds so much joy in helping people find their path to building a familyBrynn received her Genetic Counseling degree from Northwestern University and holds a Bachelor’s degree from the University of Wisconsin-Madison. 


Danielle Young, MS, CGC

With over a decade of clinical experience supporting patients in their multiple paths to pregnancy, Danielle brings expertise in third party reproduction, preimplantation genetic testing (PGT), in vitro fertilization, and carrier screening interpretation. She is passionate about the psychosocial aspects of her position and is honored to support our generous donors and serve the clients who have entrusted Seattle Sperm Bank with their fertility journey. She holds a Bachelor’s degree in Biology from the University of San Diego and a Master’s degree in Genetic Counseling from the University of Colorado. Danielle is both board-certified and licensed. 

Lupe Martinez, BA and BS, GCA

Guadalupe (Lupe) is the full-time genetic counseling assistant with Seattle Sperm Bank who support the genetic counseling team with coordinating genetic testing and general administrative tasks. Lupe is a first-generation colleague graduate from UC Santa Cruz and holds a B.S in Biology and B.A in Education, Democracy and Justice. Lupe has a special interest in the genetic counseling field. When not working, she enjoys spending time with her cat, baking, and hiking outdoors.   


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