The diagnosis of Dupuytren's contracture begins with a comprehensive physical examination. The doctor carefully assesses the patient's finger mobility and any changes in the palm. In some cases, additional investigations may be requested to further explore the cause of the condition. The diagnostic process typically includes the following steps:

Physical examination and inspection for hardened tissues or nodules (lumps) in the palm.
Application of the 'tabletop test,' where the patient attempts to flatten their palm and fully extend their fingers on a flat surface.
Assessment of the ability to grip objects and any difficulties experienced during a handshake.
Utilization of imaging methods, such as ultrasound, to thoroughly examine thickened tissues and nodules in the palm.