Guide to Diagnostic Tests
Dexamethasone suppression test (high dose, overnight)
Test/Range/Collection
Dexamethasone suppression test (high-dose, overnight), serum or plasma
8:00 AM serum cortisol level: <5 mcg/dL
[<140 nmol/L]
SST, PPT, green
$$
Give 8 mg dexamethasone dose at 11:00 PM. At 8:00 AM, draw cortisol level.
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Citation
Nicoll, Diana, et al. "Dexamethasone Suppression Test (high Dose, Overnight)." Guide to Diagnostic Tests Guide to Diagnostic Tests, 7th ed., McGraw-Hill Education, 2017. Anesthesia Central, anesth.unboundmedicine.com/anesthesia/view/GDT/619126/all/Dexamethasone_suppression_test__high_dose__overnight_.
Nicoll DD, Lu CMC, McPhee SJS. Dexamethasone suppression test (high dose, overnight). Guide to Diagnostic Tests Guide to Diagnostic Tests. McGraw-Hill Education; 2017. https://anesth.unboundmedicine.com/anesthesia/view/GDT/619126/all/Dexamethasone_suppression_test__high_dose__overnight_. Accessed October 4, 2026.
Nicoll, D., Lu, C. M., & McPhee, S. J. (2017). Dexamethasone suppression test (high dose, overnight). In Guide to Diagnostic Tests Guide to Diagnostic Tests (7th ed.). McGraw-Hill Education. https://anesth.unboundmedicine.com/anesthesia/view/GDT/619126/all/Dexamethasone_suppression_test__high_dose__overnight_
Nicoll DD, Lu CMC, McPhee SJS. Dexamethasone Suppression Test (high Dose, Overnight) [Internet]. In: Guide to Diagnostic Tests Guide to Diagnostic Tests. McGraw-Hill Education; 2017. [cited 2026 October 04]. Available from: https://anesth.unboundmedicine.com/anesthesia/view/GDT/619126/all/Dexamethasone_suppression_test__high_dose__overnight_.
* Article titles in AMA citation format should be in sentence-case
TY - ELEC
T1 - Dexamethasone suppression test (high dose, overnight)
ID - 619126
A1 - Lu,Chuanyi Mark,
AU - Nicoll,Diana,
AU - McPhee,Stephen J,
BT - Guide to Diagnostic Tests
UR - https://anesth.unboundmedicine.com/anesthesia/view/GDT/619126/all/Dexamethasone_suppression_test__high_dose__overnight_
PB - McGraw-Hill Education
ET - 7
DB - Anesthesia Central
DP - Unbound Medicine
ER -
