CORTISOL SUPPRESSION BY DEXAMETHASONE, OVERNIGHT HIGH DOSE
Rs 1,463 Rs 1,100
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OVERNIGHT DEXAMETHASONE SUPPRESSION TEST CHECKS THE EFFECT OF DEXAMETHASONE ON CORTISOL LEVELS IN THE BLOOD. IN PATIENTS SUFFERING FROM CUSHINGS SYNDROME, CORTISOL LEVELS STAY VERY HIGH AFTER DEXAMETHASONE IS ADMINISTERED. THIS TEST IS ALSO USED FOR DIFFERENTIAL DIAGNOSIS OF ACTH SECRETING PITUITARY ADENOMA FROM AN ECTOPIC ACTH SOURCE.
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DAY 1: 2 ML (1 ML MIN.) SERUM FROM 1 SST. DRAW BASELINE CORTISOL SAMPLE AT 8 AM. ADMINISTER TABLET 4 MG DEXAMETHASONE ORALLY AT 11 PM AT NIGHT. DAY 2: DRAW 2ND SPECIMEN AT 8 AM NEXT MORNING. BOTH CONTAINERS MUST BE MARKED WITH TIME AND DATE DRAWN, AND SUBMITTED WITH ONE TEST REQUEST FORM. SHIP REFRIGERATED OR FROZEN.
CHEMILUMINESCENT IMMUNOASSAY
4HRS
PATIENT TO GIVE FASTING BASELINE SAMPLE AT 8 AM. TAKE 4 MG TABLET DEXAMETHASONE ORALLY AT 11 PM SAME NIGHT. GIVE SECOND SAMPLE NEXT MORNING AT 8 AM. PATIENT SHOULD NOT BE ON STEROID THERAPY.
