Additional Tests
The doctor might perform additional tests to help diagnose erectile dysfunction in a patient. These tests include:
Ultrasound
An ultrasound helps in examining the blood vessels of the penis to detect any issues with the penile blood flow.
Injection test
The doctor injects a medication into the penis of a patient to stimulate an erection. Injection test allows the doctor to assess the firmness of erection.
Nocturnal penile tumescence (NPT) test
The NPT test evaluates the quality of nocturnal erections by making a patient to wear a portable and battery-powered device on the thigh.
Blood tests
Blood tests can be helpful to look for conditions such as heart disease, low levels of testosterone, thyroid issues, and diabetes. [5]