Verification is a proof that the designed product is correct. Design verification demonstrates that the medical device design output meets the design input. Verification is all the inspection, measurement, analysis and testing that one has the correct output specification relative to the design input requirements. Verification is less about testing and more about ensuring that as one moves from the initial design input requirements and subsequently translate them to more refined requirements to final design output specifications. Testing if the part of the design verification other methods such as inspection and analysis are acceptable too. Verification ensures that each element of a device meets the appropriate specification and standard. Verification always comes first just like building materials. It ensures the quality assurance of the device. Verification can be improved by using appropriate tools in medical device software development.