Hormone Health Hub: Expert Insights on Testing, Balance & Better Living — hormone test kit

By Theodore Zava, ZRT Laboratory  ZRT Laboratory has been working with dried samples for over 15 years, and the number of tests we offer using dried urine and blood spot make us the world expert on dried sample validation and commercialization. ZRT Laboratory specializes in dried sample types because of their superior stability, ease of collection, simple shipment and reduced storage space. Dried urine and blood spot collection is popular with researchers and remote clients, as these sample types open the door for testing in locations that lack refrigeration and equipment necessary for liquid sample collection. In order to offer...

Normal thyroid blood tests don’t always explain why patients still suffer from fatigue, cold intolerance, brain fog and weight gain. In this in-depth clinical article, ZRT Laboratory explains the critical role of selenium in thyroid hormone synthesis and T4-to-T3 conversion, how heavy metals like mercury and arsenic sequester selenium and inactivate protective antioxidant enzymes, and why this can trigger Hashimoto’s thyroiditis — even when TSH, T4 and T3 appear normal.

Most of us know when something feels off — fatigue, weight gain, mood swings, poor sleep. But fewer people realise that a hormonal imbalance is often at the root. Learn how the endocrine system works, what throws it out of balance, and how at-home hormone testing can help you find answers.

The FDA doesn’t require cosmetics to be tested for safety before going to market — and studies have found lead, cadmium, arsenic and mercury in popular lipsticks used daily by millions of women. Discover the health risks of heavy metal exposure from beauty products and how a simple at-home test can reveal your body burden.

The contraceptive pill is one of the most widely used medications in the world — but its effects on mood, brain chemistry and hormone balance are still poorly understood. This article explores how synthetic hormones disrupt oestrogen, progesterone, cortisol and neurotransmitters, and why some women are far more vulnerable to depression and anxiety as a result.