Case Report

Nonsuppressible Oral Dexamethasone Suppression Tests but Not Cushing Syndrome

Table 2

Investigation summary-current evaluation.

DateJan 201526/3/1527/3/1530/3/15  &  4/4/15 (supervised)4/4/1510/4/15

S. cortisol (8 am) mcg/dL22.38Admitted9.6316.09
S. cortisol (midnight) mcg/dL4.956.68
Overnight DST (1 mg) mcg/dL13.20
Low dose 48 hr DST (2 mg/day) mcg/dL15.4711.96
High dose 48 hr DST (8 mg/day) mcg/dL6.39
Salivary cortisol midnight (normal [kit insert] < 0.42 mcg/dL)0.3060.217
ACTH pg/mL7.2929.85
24 Hr urine free cortisol mcg/day (normal 28.5–213.7)110.72