Pathology Handbook

Alternative Names:

Overnight 1mg Dexamethasone Suppression Test
Low Dose Dexamethasone Suppression Test
Post Dexamethasone Serum Cortisol
DST

Laboratory:

Clinical Biochemistry

Test Code:

DEX

Specimen Types:

Serum

Container Types:

SST

Adults Volume or Mass:

6 mL

Minimum/Paediatric Volume or Mass:

2 mL

Collection & Request Instructions:

Collect serum (cortisol) between 8 and 9am following 1mg oral dexamethasone taken between 11pm and 12am the night before.

Record time and dosage of dexamethasone taken by patient on request form.

Transport Instructions:

Send to lab immediately