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HelpTest Code SGSS Synthetic Glucocorticoid Screen, Serum
Reporting Name
Synthetic Glucocorticoid Screen, SUseful For
Confirming the presence of listed synthetic glucocorticoids in serum specimens (see Interpretation)
Confirming the cause of glucocorticoid-induced adrenal insufficiency
This test is not useful for detection of fluticasone propionate.
Performing Laboratory
Mayo Clinic Laboratories in Rochester
Specimen Type
SerumOrdering Guidance
Specimen Required
Supplies: Sarstedt Aliquot Tube, 5 mL (T914)
Collection Container/Tube:
Preferred: Red top
Acceptable: Serum gel
Submission Container/Tube: Plastic vial
Specimen Volume: 2 mL Serum
Collection Instructions: Centrifuge and aliquot serum into a plastic vial.
Specimen Minimum Volume
Serum: 1.1 mL
Specimen Stability Information
| Specimen Type | Temperature | Time |
|---|---|---|
| Serum | Frozen (preferred) | 14 days |
| Refrigerated | 7 days | |
| Ambient | 24 hours |
Reference Values
Negative
Cutoff concentrations
Betamethasone: 0.10 mcg/dL
Budesonide: 0.20 mcg/dL
Dexamethasone: 0.10 mcg/dL
Fludrocortisone: 0.10 mcg/dL
Megestrol acetate: 0.10 mcg/dL
Methylprednisolone: 0.10 mcg/dL
Prednisolone: 0.10 mcg/dL
Prednisone: 0.10 mcg/dL
Triamcinolone acetonide: 0.10 mcg/dL
Values for normal patients not taking these synthetic glucocorticoids should be less than the cutoff concentration (detection limit).
Day(s) Performed
Wednesday
Test Classification
This test was developed and its performance characteristics determined by Mayo Clinic in a manner consistent with CLIA requirements. It has not been cleared or approved by the US Food and Drug Administration.CPT Code Information
80299
LOINC Code Information
| Test ID | Test Order Name | Order LOINC Value |
|---|---|---|
| SGSS | Synthetic Glucocorticoid Screen, S | 43141-1 |
| Result ID | Test Result Name | Result LOINC Value |
|---|---|---|
| 23593 | Betamethasone | 41745-1 |
| 23594 | Budesonide | 41747-7 |
| 23595 | Dexamethasone | 14062-4 |
| 23596 | Fludrocortisone | 41754-3 |
| 23600 | Megestrol Acetate | 41762-6 |
| 23601 | Methylprednisolone | 14186-1 |
| 23602 | Prednisolone | 12727-4 |
| 23603 | Prednisone | 12434-7 |
| 23605 | Triamcinolone Acetonide | 41767-5 |
Clinical Information
The primary use of this test is to assess exposure to synthetic glucocorticoids in patients with suspected central adrenal insufficiency.
Synthetic glucocorticoids are widely used as anti-inflammatory and immunosuppressive agents. Synthetic glucocorticoids can be used through various routes: oral, intravenous, intramuscular, inhaled, intranasal, and topical. In most cases, exposure to synthetic glucocorticoids is clearly documented in the medical record. However, occasionally, exposure to synthetic glucocorticoids is not clearly evident. This may occur when patients use non-prescription preparations (usually oral or topical) that have glucocorticoids.
Exposure to synthetic glucocorticoids leads to development of features of Cushing syndrome (weight gain, abdominal obesity, moon facies, skin thinning, easy bruising, and metabolic comorbidities) or to glucocorticoid-induced adrenal insufficiency due to hypothalamic-pituitary-adrenal axis suppression by the circulating supraphysiologic synthetic glucocorticoids. Hormonal work up in these cases demonstrates very low corticotropin and cortisol concentrations.
This test allows for measurement of nine synthetic glucocorticoids in patients in whom exogenous glucocorticoid exposure is suspected.
Interpretation
This test screens for and quantitates, if present, the following synthetic glucocorticoids: betamethasone, budesonide, dexamethasone, fludrocortisone, megestrol acetate, methylprednisolone, prednisolone, prednisone, and triamcinolone acetonide.
The presence of synthetic glucocorticoids in serum indicates current or recent use of these compounds. Since several of these compounds exceed the potency of endogenous cortisol by 1 or more orders of magnitude, even trace levels may cause hypothalamic-pituitary-adrenal axis suppression with development of glucocorticoid-induced adrenal insufficiency.
Cautions
This method cannot detect all available synthetic steroids available either as pharmaceutical compounds or chemicals present in food. The assay confirms only the listed synthetic glucocorticoids. For more information see Interpretation.
Lack of detection of listed synthetic glucocorticoids does not exclude previous exposure to one or more of tested glucocorticoids, as glucocorticoid-induced adrenal insufficiency (and resolution of features of overt Cushing syndrome) may persist for weeks-months after exogenous glucocorticoids were discontinued. In a patient with documented glucocorticoid exposure, circulating concentrations of synthetic glucocorticoids depend on the route of administration (detected for longer time if joint injection), dose and type of glucocorticoid that influence metabolism and clearance of the glucocorticoid (longer for triamcinolone).
Report Available
5 to 14 daysReject Due To
| Gross hemolysis | OK |
| Gross lipemia | OK |
| Gross icterus | OK |
Method Name
Liquid Chromatography Tandem Mass Spectrometry (LC-MS/MS)