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Lab Manual for Moffitt-Long and Mount Zion

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Dexamethasone Suppression Test

Item Value
Approval req'd? No
Available Stat? No
Test code
Test group Dexamethasone Suppression Test
Container type
Sample type see Cortisol
Normal range See Additional Information
Additional information For Depressive Illness based on Carrollet al. Arch Gen Psych 1981;38:15.

1 mg dexamethasone is given at 2300 on day 1, and serum cortisol levels are obtained 18 and 24 hours later (1600 and 2300 on day 2). A cortisol level of > 4 µg/dL (> 110 nmol/L) in either day 2 specimen is considered abnormal.

Indomethacin and similar drugs may give false-negative results, and the diagnostic value of this test is in any case dubious.
Last Updated 4/21/2008 12:23:59 PM
Entry Number 301

If you have additional questions regarding this test, please call: 415-353-1667

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