The head of a Philadelphia museum says its sample of Abraham Lincoln's blood may get DNA testing, but some questions must be answered first.

Cardiologist John Sotos believes Lincoln had a rare genetic disorder and wants the DNA test to prove his hypothesis. The museum's board met Monday night and rejected Sotos' request to test the pillowcase.

Board President Eric Schmincke says more questions need to be answered about how the artifact will be treated. He says it's possible that testing will be overseen by the National Museum of Health and Medicine.