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Cortisol is a hormone that plays an important role in many bodily functions. It helps regulate blood pressure and blood sugar (glucose) levels, aids digestion, and triggers the "fight or flight" reaction that your body uses to respond to stressful situations.
This test measures the amount of cortisol in your body.
You may be asked to collect urine at home, possibly over a period of 24 hours. Follow instructions from a health care provider about how to collect the sample.
Your test results will be reported as a value that tells you how much cortisol is in your body. Different units may be used for blood, saliva, and urine.
Results within the reference ranges are considered normal.
If you have an abnormal result, you may need more than one cortisol test because cortisol levels can vary throughout the day and affect your test results.
Talk with your health care provider about what your results mean.
This information is not intended to replace advice given to you by your health care provider. Make sure you discuss any questions you have with your health care provider.
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