Newborn Blood Spotting onto a Guthrie Card (image) Cold Spring Harbor Laboratory Share Print E-Mail Caption A newborn's blood is spotted onto a Guthrie card. Commonly used to collect blood spots from the pricked heel of newborns to screen for diseases such as phenylketonuria, cystic fibrosis, and sickle cells disorders, Guthrie cards might offer a snapshot of the epigenome before disease develops. Credit The New York State Department of Health Newborn Screening Program Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.