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HelpTest ID FDXM Dexamethasone
Secondary ID
91956Method Name
High-pressure liquid chromatography/tandem mass spectrometry (HPLC/MS-MS)
Reporting Name
DexamethasoneSpecimen Type
SerumDraw blood in a plain, red-top tube(s). Spin down and send 3 mL of serum frozen in a plastic vial.
Note: Serum gel tube is acceptable, but must pour off into a plastic vial.
Specimen Minimum Volume
Pediatric minimum: 1 mL
Note: Does not allow for repeat analysis.
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Frozen (preferred) | 365 days |
| Refrigerated | 14 days | |
| Ambient | 6 days |
Reference Values
Units = ng/dL
Adults baseline: <30
8:00 AM following 1 mg dexamethasone
previous evening: 140 - 295
8:00 AM following 8 mg dexamethasone
(4 x 2 mg doses) previous day: 1600 - 2850
Day(s) Performed
Monday
Report Available
3 - 9 daysPerforming Laboratory
Esoterix EndocrinologyCPT Code Information
80375