Prior to a Cortisol Test, it's generally recommended to avoid activities or factors that can affect Cortisol levels and provide inaccurate results. These include intense exercise, caffeine consumption, smoking, and certain medications that can interfere with Cortisol production or regulation. It's important to follow any specific instructions provided by your healthcare provider or the laboratory conducting the test. They will provide you with guidelines on how to prepare for the test, including any necessary dietary or lifestyle modifications, and inform you of the appropriate timing and any restrictions related to medications or activities.