Insulin Tolerance Test (ITT)
Precautions: Do not leave the patient unattended since hypoglycemia is expected. A physician must be available in the walking distance from the room where the ITT is performed. Interpretation: A…
Thyroid Cancer Follow-Up: Thyrogen Injection with No Scan
Day Date What to do 1 Day and date Have labs (thyroglobulin) drawn Related posts: Metyrapone Stimulation Test Ovine Corticotropin-Releasing Hormone (oCRH) Stimulation Test Insulin Tolerance Test (ITT) GHRH–Arginine GH…
Two Day Low Dose Dexamethasone Suppression Test
Assay for Cortisol: Chemiluminescence Immunoassay (CLIA) . Precautions: None. Interpretation: Serum cortisol concentration > 1.4–1.8 µg/dl after 2 day low dose dex is strongly suggestive of Cushing’s syndrome [1]. Caveats: Use of…
Thyroid Cancer Follow-Up: Withdrawal Protocol
Day Date What to do 0 (Day:) Date: Have baseline TSH and Thyroglobulin drawn if not done in the past 60 days. Stop L-thyroxine medication beginning on day 0 7…
Secretin Stimulation Test
Glucagon stim test Time Gastrin Basal(0 min)-twice 2 min 5 min 10 min 15 min 20 min Related posts: Metyrapone Stimulation Test Ovine Corticotropin-Releasing Hormone (oCRH) Stimulation Test Insulin Tolerance Test (ITT) GHRH–Arginine GH Stimulation Test…
Overnight High Dose Dexamethasone Suppression Test—8 mg
2. Bruno OD, Rossi MA, Contreras LN, et al. Nocturnal high-dose dexamethasone suppression test in the aetiological diagnosis of Cushing’s syndrome. Acta Endocrinol (Copenh). 1985;109(2):158–62. 3. Dichek HL, Nieman LK, Oldfield…
Growth Hormone Suppression Test (Post-Glucose Administration)
Assay for GH: Immunoenzymatic assay Precautions: Patients may complain of nausea. Interpretation: Diagnosis of acromegaly: Using ultrasensitive assays, a GH suppression to < 0.4 ng/ml is considered the gold standard test to…
Ovine Corticotropin-Releasing Hormone (oCRH) Stimulation Test
CRH test − 15 min 0 min (baseline) 15 min 30 min 45 min 60 min Cortisol ACTH References 1. Ishizuka B, Quigley ME, Yen SS. Pituitary hormone release in response to food ingestion: evidence for neuroendocrine…
Metyrapone Stimulation Test
Assay for Cortisol and ACTH: Chemiluminescence Assay (CLIA) . Assay for 11 DOC: LC-MS/MS. Precautions: Hypotension , nausea, vomiting, abdominal discomfort or cramping, and musculoskeletal pain in patients with adrenal…
Adrenal Venous Sampling
Cortisol Aldosterone A/C A/C dominant A/C non-dominant A/C non dominant A/C AVC Right AV Left AV Low IVC References 1. Funder JW, Carey RM, Fardella C, et al. Case detection,…
