Thyroid UK
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High Cortisol?

Hi, can anyone help me. I have suffered for the last few years with weight gain, fatigue, stress and a handful of other issues. I had my thyroid checked in July last year and was told it was fine. After researching myself I asked if I could have a cortisol level check as I experience all of the symptoms of high cortisol.

After a 9am test it came back as 565, is this high or with normal range.

Any help would be so appreciated. Thank you.

3 Replies

You would have to add the ranges and they are the figures in brackets after the results to get a response.

When you had your blood test for thyroid hormones, was it at the very earliest possible, fasting (you can drink water)?. When you are diagnosed you'd allow a gap of 24 hours between the last dose and test.

If the test wasn't at the earliest your results wouldn't be correct.

You need TSH, T4, T3, Free T4, Free T3 and thyroid antibodies checked. NHS wont do all of them but if you can afford a private test, we have two labs who will do the tests for you. Just in case I will give you a link:-

The following has a discount at present and the other is Blue Horizon.

GP should test B12, Vit D, iron, ferritin and folate as deficiencies can also cause symptoms.


UK levels for cortisol at his time of day is between 450-650, so yours is at the top end of normal. However if you have other symptoms such as weight gain especially around your middle, insomnia, muscle weakness, increased facial hair, maybe stretch marks, acne then have a look at Cushing's disease. Hopefully it's not this as it's not a nice condition.


Many thanks, I will make another appointment with my GP to discuss. I seem to have a lot of the symptoms that suggest high cortisol and to be honest my self esteem seems to have plummeted. this has gone on for around 3 years so lets hope I can get a little further down the line. Thank you so much for replying.

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