CORTISOL

SPECIMEN: 0.8 ML SERUM

TUBE TYPE: SERUM (SST) / TIGER-TOP TUBE / TIGER-TOP

MINIMUM VOLUME: 0.3 ML BLOOD SHOULD BE DRAWN AT 8 AM AND 4 PM TO EVALUATE BASELINE DIURNAL VARIATION. MORNING SPECIMEN IS OFTEN ORDERED WITH ACTH LEVEL

TRANSPORT: REFRIGERATE