Casandra
Casandra Test Code QD52438Version 1 (DRAFT)
Performing Lab
Dexamethasone
Clinical Use
Order TestUse
Measurement of dexamethasone is useful in assuring compliance with dexamethasone treatment and documenting adequate dosing during procedures such as the dexamethasone suppression test used in the differential diagnosis of Cushing's syndrome.
Special Instructions
Not provided.
Limitations
Not provided.
Test Details
Methodology
Mass Spectrometry
Biomarkers
Dexamethasone
AnalyteDexamethasone • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
2-10 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
0.85 mL
Minimum Volume
0.25 mL
Container
red‑top tube (no gel)
Collection Instructions
Draw specimen between 8:00 a.m. and 10:00 a.m.
Causes for Rejection
Gross hemolysis • Grossly lipemic • Serum separator tube (SST)
Stability Requirements
| Temperature | Period |
|---|---|
| Room Temperature | 72 hours |
| Refrigerated | 14 days |
| Frozen | 90 days |