I had a midnight salivary cortisol test done on two consecutive nights. The first was normal at .09. It was the top of the range. The second was high at .25. It should be at or under .09. I’m scared. My highest UFC was 56 with top range being 45. My am ACTH was 16.5 in range. I have symptoms of cushings but recently lost weight after cutting out white carbs and sugar and because I’m so scared, I stopped eating. Today I only had a few pieces of cheese and a couple falafel balls. Is it normal to lose weight? My face used to be puffy and it’s thin now. I’m scared this is caused by a cancerous tumor. I had a clear pituitary mri and a clear abdominal ct scan. I’m losing tons of hair and growing facial hair. My muscles feel weak. I’m prediabetic and insulin resistant. Why would my midnight saliva cortisols fluctuate like this over just one night?