Sign in →

Test Code DEXAMETH Dexamethasone

Performing Laboratory

Quest Diagnsotics Nichols Insititute

Methodology

Liquid Chromatography/Tandem Mass Spectrimetry (LC/MS/MS)

 

Specimen Required

Container/Tube:  Red Top Tub (gel not acceptable)

Specimen: 0.85 mL serum ( 0.6 mL min)

Transport Temperature: Refrigerated

 

Note: Draw specimen between 8:00 and 10:00 am

Reference Values

Baseline: Less than 20 ng/dL

1mg dexamethasone overnight: 180 - 550 ng/dL (8:00 - 10:00am)

Test Classification and CPT Coding

80299

Useful For

Test used in the differential diagnosis of Cushing's syndrome.

Computer Interface Code

PDM # 5960035