Blog — cortisol rhythm

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.

Hormone testing is a critical tool in modern healthcare, guiding everything from fertility treatment to hormone replacement therapy. While blood testing has long been the traditional route, saliva testing has rapidly emerged as a scientifically validated, convenient, and non-invasive alternative—offering clinical accuracy with ease of use. But how reliable is it really?  The Scientific Foundation of Saliva Testing Saliva testing isn't just a novel idea—it's backed by science. Over 600 peer-reviewed studies in 2012 alone have utilised salivary analysis to measure hormone levels, with results showing a strong correlation to conventional serum (blood) tests. So, how does it work? In the bloodstream,...