Adrenal Symptoms: Which Blood Tests Are Commonly Used?
Adrenal symptoms can point to low cortisol, high cortisol, excess aldosterone, or other hormone issues. Learn which adrenal blood tests are commonly used and how results are interpreted.
Endocrine Health
What Does a High or Low ACTH Result Mean?
High or low ACTH results are interpreted best with cortisol. Learn what common ACTH-cortisol patterns may suggest, why timing and sample handling matter, and what follow-up tests are often used.
Growth Hormone Blood Test: What It Measures, Preparation, and Results
A growth hormone blood test can help evaluate GH deficiency, acromegaly, gigantism, and pituitary function—but random GH levels are hard to interpret alone. Learn how GH, IGF-1, stimulation tests, and suppression tests work.
What Does a High or Low IGF-1 Result Mean?
A high or low IGF-1 result can reflect growth hormone activity, but interpretation depends on age, sex, symptoms, lab method, and follow-up testing.
Cortisol Blood Test: What It Measures, Preparation, and Results
A cortisol blood test measures a key adrenal hormone that follows a strong daily rhythm. Learn why timing matters, how to prepare, what high or low results can mean, and what follow-up tests may be needed.