Blog — cortisol rhythm

Cortisol testing helps evaluate how the body responds to stress by measuring daily hormone patterns linked to energy, sleep, mood, and immune balance. Through saliva and blood spot methods, clinicians can identify adrenal and HPA-axis imbalances early, enabling more personalized strategies to address fatigue, burnout, and stress-related health concerns.

Understanding your hormones is essential for addressing fertility concerns, cycle irregularities, and hormone-related symptoms. This article explains the key differences between Menstrual Cycle Mapping and Fertility Testing, helping you choose the most suitable option based on your goals, symptoms, and the level of insight you need into your reproductive health.

Discover the benefits of hormone testing in saliva, dried blood spot, and dried urine spot methods. Learn how each approach enhances accuracy, convenience, and health insights for hormone balance.

Saliva Testing for Hormones: Accurate, Convenient, and At-Home.

The UK is facing a growing obesity crisis, with two-thirds of adults and a rising number of children classified as overweight or obese. A recent UK Parliament briefing highlights alarming trends, including regional and ethnic disparities and increased risks linked to socioeconomic status. While public health strategies continue to evolve, addressing the hormonal root of weight gain may offer a more effective, personalized solution. ZRT Laboratory’s Weight Management Profile helps uncover hidden hormonal imbalances—such as elevated cortisol, low testosterone, or thyroid dysfunction—that contribute to stubborn fat gain, poor metabolism, and increased disease risk.