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Performing Laboratory

Esoterix Endocrinology

Specimen Type


Specimen Required

Draw blood in a plain, red-top tube(s). Separate serum within an hour. 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

1 mL Note: Does not allow for repeat analysis.

Specimen Stability Information

Specimen Type Temperature Time Special Container
Serum Frozen (preferred) 365 days
  Refrigerated  14 days
  Ambient  6 days

Reference Values

Units = ng/dL

Day(s) and Time(s) Performed


CPT Code Information


LOINC Code Information

Test ID Test Order Name Order LOINC Value
FDXM Dexamethasone 14062-4


Result ID Test Result Name Result LOINC Value
Z1745 Dexamethasone 14062-4

Analytic Time

3 - 9 days