Table 1

Laboratory Presentation

AT PRESENTATION (Normal Range)

VALUE


Serum Potassium (3.8-5.2 mEq/l)

2.1


Serum HCO3 (21-32 mEq/l)

42


Plasma Glucose (mg/dl)

339


Morning Serum Cortisol (06:15) (4.0-32 μg/dl)

111.1


ENDOCRINE WORK-UP (Normal Range)


1 mg Overnight Dexamethasone Supression Test (Normal cortisol < 1.8 μg/dl)

116.7


48 hour High Dose Dexamethasone Supression Test (Normal cortisol < 1.8 μg/dl)

109.8


24 hour Urine Free Cortisol (0 to 50 μg)

16 575


Plasma ACTH (10-46 pg/ml)

278


Plasma CRHa (0-10 pg/ml)

10


Plasma Chromogranin A (0-5.0 nmol/l)

26


Serum Carcinoembryonic antigen (0-5.0 ng/ml)

10.59


Serum Calcitonin (0-5 pg/ml)

< 2.0


Serum Serotonin (0-420 ng/ml)

156


Plasma Metanephrine (0-62 pg/ml) and

Normetanephrine (0-145 pg/ml)

12

37


Serum Gastrin (13.0-115.0 pg/ml)

280


24 hr Urinary 5-HIAA (0-8.0 mg)

6.7


Abbreviations: ACTH, Adrenocorticotropic Hormone; CRH, Corticotropin Releasing Hormone, 5-HIAA, 5-hydroxy-indoleacetic acid

aCRH assay is a plasma based test by which Corticotropin Releasing Factor is measured by direct radioimmunoassay (Inter Science Institute, Inglewood, CA).

Shahani et al. Diagnostic Pathology 2010 5:56   doi:10.1186/1746-1596-5-56

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