Cortisol levels can be tested by:
- A blood test: A nurse or lab technician will use a needle to take a blood sample from a vein in your arm. Your results will show the level of cortisol in your blood at the time of the test.
- A urine test: Measuring the level of cortisol in your urine over a 24-hour period.
- A saliva test: Checking salivary cortisol at midnight.
- Taking a medicine called dexamethasone that suppresses cortisol and checking how levels of the hormone change via a blood test.
Blood tests are the most accurate way to measure cortisol levels. Saliva tests are also accurate but can be more difficult to collect, Urine tests are only useful for measuring short term or acute stress responses.
If you want to test your cortisol levels at home, there are several at-home cortisol tests available. Healthline recommends LetsGetChecked, RxHomeTest, Verisana, myLAB Box, and HRT.org as reliable options. These tests use different methods to collect samples such as finger prick blood samples, saliva samples, and urine samples. The collected samples are then sent to a lab for analysis. The results are reviewed by a team of physicians and nurses and are usually available within 2-5 days.
Please note that while these tests may provide information about your cortisol levels, they should not be used to self-diagnose any medical or mental health condition. It is always recommended to discuss your results with a doctor, hopefully this article can help you, good luck.