CORTISOL SUPPRESSION BY DEXAMETHAS ONE, OVERNIGHT HIGH DOSE
Day 1: 2 mL (1 mL min.) serum from 1 SST. Draw baseline Cortisol sample at 8 a. m. Administer tablet 4 mg Dexamethasone orally at 11 p. m. at night. Day 2: Draw 2nd specimen at 8 a. m next morning. Both containers must be marked with time and date drawn, and submitted with one test request form. Ship refrigerated or frozen.
Sample Daily by 1 pm
Report Same Day Evening