Genetic Services

We are 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. 

Genetic Counseling

Genetics is complicated. Our professionals are here to help simplify it for you. Our genetic counseling team can help with:

Donor Carrier
Screening

Use our donor search tool to filter donors who have screened negative for the genetic conditions for which you/your egg source are a carrier.  

Request
Supplemental Testing

Our genetic counseling team can help coordinate genetic testing for conditions that were not included on the donor’s original carrier screening panel.

Questions about a
donor’s medical history

If you have questions about a donor’s family medical history, please reach out to us at genetics@copenhagenspermbank.com. We would be happy to assist.

Provide a medical update
on your child

Do you have a medical update about your donor-conceived child you’d like to share with us? Please do so here.  

Request updated medical records for a donor

Is your donor no longer listed on our site? Do you need updated medical records? Reach out to our team at genetics@copenhagenspermbank.com.

Questions about a Medical Update Letter you received

As sperm donors and donor conceived people age, they may receive new medical diagnoses. If you have questions about a Medical Update Letter you received, please contact us.

Donor Search Tool

Find a Donor

Our Genetics Team

Copenhagen Sperm Bank is proud to have a strong genetic counseling team. Meet our team of dedicated genetic counselors.
Katherine Hornberger
MS, CGC
Katherine is a board certified and multi-state licensed genetic counselor who supports recipients, donors, and clinics working with Copenhagen Sperm Bank & Seattle Sperm Bank. Prior to joining Seattle Sperm Bank, Katherine worked for a large IVF center and a preimplantation genetic testing laboratory.  Katherine 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. 
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. 
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 family.  Brynn received her Genetic Counseling degree from Northwestern University and holds a Bachelor’s degree from the University of Wisconsin-Madison. 
Lupe Martinez
BA and BS, GCA
Guadalupe (Lupe) is the full-time genetic counseling assistant 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. 

GUIDANCE & SUPPORT

Schedule a Genetic Phone Consultation

Have questions for our Genetics Team?

Do you have questions for our genetics team? Please reach out us.