Corticosteroid (e.g., triamcinolone) in Serum or Plasma by Immunoassay

Why This Test Is Done

Your healthcare provider may order this test to evaluate how your body is responding to steroid medications, check for signs of Cushing’s syndrome (excess cortisol), monitor adrenal function, or assess immune system activity. It can also help diagnose conditions like adrenal insufficiency or evaluate reactions to treatments like triamcinolone injections.

What to Expect Before the Test

No special preparation is usually needed, but you may be asked to fast for a few hours before the blood draw if cortisol levels are being specifically measured. Bring any medications or supplements you’re taking to your appointment.

During the Test

A healthcare professional will draw blood from a vein in your arm. You may feel a slight pinch, but the process is quick. The blood sample will be sent to a lab for analysis using an immunoassay method to detect steroid hormones.

What the Results Mean

Results will show the concentration of these hormones in your blood. High levels may indicate overproduction of steroids, while low levels could suggest adrenal problems or medication effects. Your provider will interpret results in the context of your symptoms and medical history.