Fertility Mapping: Navigating Fertility with PCOS and Insulin Resistance (Part II)By Dr. Alison McAllister Polycystic Ovary Syndrome (PCOS) is a complex, multifactorial condition influenced by disruptions in hormone receptors, metabolism, neurotransmitter function, and nutrient balance. As a lifelong disorder, PCOS is a leading contributor to infertility, weight gain, and an increased risk for cardiometabolic issues. In this blog post, we dive deeper into laboratory testing, helping healthcare providers understand which tests are critical for women suspected of having PCOS. Lab Testing for PCOS PCOS is most commonly diagnosed through the Rotterdam Criteria, a diagnostic framework that considers various indicators, including...
Heavy periods affect millions of women, yet the underlying causes are frequently misunderstood or left unaddressed. From oestrogen and progesterone imbalances to structural issues such as fibroids and adenomyosis, there are several well-established reasons why menstrual bleeding can become excessive. This article explains the physiology of the menstrual cycle, the most common causes of heavy periods, and how hormone testing can help identify what is driving your symptoms — so you can take informed steps towards better menstrual health.
If you are experiencing infertility issues, understanding which hormones to test — and why — is the essential first step. Dr. Alison McAllister of ZRT Laboratory explains the full fertility hormone profile: from LH and FSH as indicators of ovarian reserve, to estradiol, progesterone and testosterone for ovulation health, adrenal hormones cortisol and DHEA-S, thyroid markers including TPO antibodies, and the often-overlooked role of vitamin D in fertility and PCOS.
Infertility affects 1 in 8 couples worldwide — yet many are rushing into expensive IVF without first addressing the hormonal imbalances that may be silently undermining their chances. In this wide-ranging clinical discussion, Dr. Alison McAllister of ZRT Laboratory shares her expertise on the hormonal causes of infertility in both men and women, the key tests that are too often missed, and the complementary strategies that can dramatically improve outcomes.
Infertility affects 8–12% of couples worldwide, yet many of the hormonal causes — from undiagnosed Hashimoto’s and PCOS to luteal phase defects and thyroid dysfunction — go undetected by standard testing. A comprehensive first-line fertility hormone panel covering sex hormones, thyroid, adrenal markers and ovarian reserve can identify what is really getting in the way of conception, and dramatically improve the odds of success with fertility treatments.
