The types of tests that may be ordered to diagnose Peyronie's disease include:
1. In-office test to induce an erection, with or without Penile Doppler Duplex Ultrasound (PDUS) to assess blood flow, identify hardened lumps (calcifications), and evaluate the quality of the erection.
2. Magnetic Resonance Imaging (MRI), particularly high-resolution T2 MRI, to identify issues related to Peyronie's disease, such as areas of low signal intensity on the tunica albuginea (the tissue that covers the penis).
It is important to note that lab tests or detailed imaging scans are not compulsory for diagnosing Peyronie's disease, and the doctor's examination and the patient's description of symptoms are crucial for diagnosis.