Cortisol

CPT Code

82533

Specimen Type

Blood

Container Type

Serum Separator Tube (SST)/Yellow

Stability

2-8°C, 14 days; -10°C, 30 days

Handling Instructions

Allow to clot for 30 mins, centrifuge within 2 hours

Clinical Notes

Cortisol is a hormone that plays a role in the metabolism of proteins, lipids, and carbohydrates. It affects blood glucose levels, helps maintain blood pressure, and helps regulate the immune system. Most cortisol in the blood is bound to a protein; only a small percentage is “free” and biologically active.