Report Altered circadian rhythm? in Guest Questions Posted October 6, 2012 Hi MCF! Sorry for the belated response. Yes, the test done was the overnight dexamethasone suppression test. As for lactose intolerance, I think I may have made myself misunderstood here. Fortunately, in spite of all my intolerances, I tolerate milk very well even during my worst times. I'll take some other tests in the next days, even 4pm serum cortisol, along with some other hormonal tests. Looks useful. Let's see what comes up. Thanks!