Test/Investigation
Dexamethasone suppression test
Site(s) or Laboratory offering Test/Investigation
NNUH, QEH, JPUH
Units
nmol/L
Also Known as/Frequency of Test
Overnight dexamethasone suppression test
Sample type
Serum
Turnaround times (TAT) Urgent/Routine/GP or OPD
1 hour / 4 hour / by 8am next day
Reference intervals (adult unless stated)
A normal response is suppression of 09:00h Cortisol to <50nmol/L
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