The Conference National Board (NBE) – Funeral Service Sciences Practice Test

This item tests whether tissues are receiving blood flow, i.e., whether there is vitality. The ligature test works by constricting a finger and watching for a visible change in color that comes from ongoing circulation. If the person is alive, the tissues can still perfuse, so you’ll see a rapid color response despite the constriction, indicating life. If there is no active circulation—as in death—the finger won’t show that kind of color change, because blood isn’t being actively pumped through the tissues. This makes the ligature test a specific way to assess life at the moment of death, rather than a general vitality check, an autopsy, or a simple pulse check.