The text does not mention any specific tests that are needed for diagnosing Imposter Phenomenon. The diagnosis of Imposter Phenomenon is typically based on a detailed review of the person's history, physical health, social, environmental, and psychological factors. Diagnostic tests such as lab tests or X-rays may be needed depending on the individual and the judgement of the evaluating doctor, but these tests usually do not provide helpful information about Imposter Phenomenon itself unless there is a physical condition that can influence the person's psychological state.