To confirm the abortion, you also need to do a radio screen test, such as an ultrasound or an MRI, and you need to do a CBC test, a hemothorax test, a urine test to see if you have an infection, and you can do a pelvic test, and finally, a standard pregnancy test to check for missing abortions.
Doctor, I think I missed an abortion, and I didn't see the fetal heartbeat in the last ultrasound.