Cortisol Stress Hormone TestCortisol, the bodys primary stress hormone, plays a crucial role in regulating fear, mood, and motivation. It also helps manage key functions like inflammation, blood pressure, blood sugar, sleep cycles, and metabolismespecially during stressful situations. Essentially, cortisol helps your body respond to stress, while also maintaining balance across several vital systems. Preparing for Your Sample Collection For the most accurate results, fasting is