Dexamethasone Suppression Test, Plasma or Serum

Additional Codes

Test Name in EPIC	EPIC Test Code	Mnemonic
DEX SUPPRESSION	LAB0849	DEXSU

Chemiluminescent Microparticle Immunoassay (CMIA)

Performance of Test

Nursing station will give patient 1 mg of Dexamethasone to be taken at 11 p.m.

Patient will arrive in laboratory in a.m.

DRAW CORTISOL ON PATIENT AT 8 a.m.

Specimen Type: Serum

Container/Tube: Serum gel

Specimen Volume: 1 mL

Specimen Minimum Volume: 0.15 mL

Spin down, separate and aliquot within 8 hrs of draw.

Refrigerate 5 days/Ambient 8 hours OK/Frozen OK

Monday through Sunday

Chemistry-

Central Region: St. Joseph's Medical Center Lab

East Region: SMDC Clinical Lab

82533

Normal Range: A.M. level after overnight dexamethasone suppression: <2.0 µg/dL