A separation of the placenta from the uterine wall, or , can be difficult to identify. Diagnosis is based on a physical exam, a medical history, and a process of elimination. Testing may include:
- Fetal heart monitoring, to assess the fetus's condition and check for contractions of the uterus.
- An ultrasound test, which can detect about 50% of placental abruptions.1 A negative ultrasound result does not necessarily guarantee that the placenta is intact.
- A blood test for . A woman with placenta abruptio can become anemic from excessive blood loss.