.jpg){kind=logo}
| A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # |
DEXAMETHASONE SUPPRESSION TEST
Test CodeLAB8415 (MISCELLANEOUS)
CPT Codes
82533
Includes
Cortisol
Preferred Specimen
1 Gold tube (SST)
Patient Preparation
Draw serum between 7:00 am - 9:00 am following the administration of 1mg Dexamethasone between the hours of 11:00 pm - midnight. This test is not for dexamethasone compliance.
Minimum Volume
0.5 mL (1 mL optimal)
Other Acceptable Specimens
1 Lavender tube (EDTA)
OR
1 Green tube (Lithium Heparin)
OR
OR
1 Green tube (Lithium Heparin)
OR
Instructions
Centrifuge for complete separation of serum or plasma from red cells WITHIN 2 HOURS. Aliquot plasma samples into a transfer tube. If testing cannot be completed within 48 hours, freeze.
Transport Container
Gold tube or Transfer tube
Transport Temperature
Refrigerate
Specimen Stability
2-8ºC up to 2 days; Frozen samples are stable 7 days
Reject Criteria (Eg, hemolysis? Lipemia? Thaw/Other?)
Hemolyzed
Methodology
Immunoassay
Setup Schedule
M, T, W, Th, F, Sa, Su
As received; STAT testing is not available
As received; STAT testing is not available
Report Available
Final result available within 24 hours
Reference Range
<3 ug/dL
Clinical Significance
This assay measure the cortisol level 8 hours following the administration of Dexamethasone. Used as an aid in the diagnosis of Cushing syndrome.
Performing Laboratory
Alverno Central Lab
