Blog — testosterone levels

A comprehensive guide to understanding hormone health—from adrenal function and thyroid balance to menopause, andropause, metabolism, and reproductive wellness. Learn how hormonal imbalances develop, how they affect energy, mood, weight, and overall wellbeing, and how modern testing methods like saliva, blood spot, and bioidentical therapies can support personalised health and long-term vitality.

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.

Why a Hormone Profile Is Better Than a Single Test. When men experience hormone-related symptoms (like low libido, fatigue, weight gain, or mood changes), it’s rarely just one hormone causing the issue. A simple testosterone check may miss the bigger picture.

Infertility is an increasingly common issue, affecting over 22% of married women who struggle to conceive or carry a pregnancy to term. While physical causes like anovulation, tubal damage, or endometriosis account for many cases, hormonal imbalances are often overlooked yet highly treatable contributors to infertility. The ZRT Fertility Profile offers a comprehensive and convenient way to evaluate hormone levels that are essential for conception and pregnancy maintenance. By testing markers like FSH, LH, estradiol, progesterone, testosterone, thyroid hormones, and cortisol, this profile helps identify conditions such as ovarian insufficiency, luteal phase deficiency, PCOS, thyroid dysfunction, and stress-related hormonal disruption. Samples can be collected easily at home through fingerstick blood and saliva on specific days of the menstrual cycle, ensuring accurate and timely results. Early identification of hormonal imbalances empowers women to take corrective action—often through simple lifestyle changes or targeted therapies—before turning to more invasive fertility treatments. Whether you’ve been trying to conceive without success, experienced recurrent miscarriages, or are planning ahead for pregnancy, ZRT’s Fertility Profile provides critical insights to help you and your healthcare provider take proactive steps toward reproductive health and success.