I have done my research and have some new info on the article below entittled "Your Baby's Blood". I have confirmed with the State Dept. of Health that they are keeping your childs secimen for 21 years. But suprisingly we do have recourse. They have a form you can fill out to request that the specemin be destroyed.
You can contact the following person and ask to be sent the form.
Jessica Dolle, MPH Health Services Consultant
WA State Department of Health Newborn Screening
Phone: (206) 418-5534
Fax: (206) 418-5415