Test ID: SB-640 | Saliva 4-Point Cortisol + Blood Spot Thyroids
This profile measures 10 key markers linked to thyroid function and cortisol rhythm. Saliva testing includes Cortisol 4-point C(x4) to assess your daily stress pattern. Blood spot testing includes Thyroid Stimulating Hormone (TSH), Free T3 (FT3), Free T4 (FT4), Thyroid Peroxidase Antibodies (TPOab), Thyroglobulin Antibodies (Tgbn), and Total T4 (TT4).
If you often feel tired, stressed, or struggle with low energy, poor sleep, or unexplained weight changes, these may be linked to thyroid imbalance or disrupted cortisol levels. This at-home Thyroid & Cortisol Test Kit helps you explore what could be affecting your body and overall wellbeing.
Suitable for women, men, adults, and children, this test offers a clear understanding of thyroid health and stress response. It is ideal for those looking to gain insight into symptoms such as fatigue, slow metabolism, mood changes, low motivation, sleep issues, or possible thyroid dysfunction.
By analysing these markers, the test can help identify thyroid dysfunction, cortisol imbalance, and thyroid antibody-related issues that may impact your energy, metabolism, mood, and daily performance. This allows you to take more informed steps towards improving your health and lifestyle.
The kit is easy and convenient to use at home. Collect your samples from the comfort of your home and send them to our laboratory. Your results will be ready within 3–5 working days after the lab receives your sample. You will receive a detailed report with clear graphics and values, along with expert comments from a Hormone Specialist PhD doctor, including guidance on what to do next.
The test is suitable for adults and children. The kit includes the laboratory fee, meaning there are no additional laboratory costs or taxes. Customers are responsible for posting their samples to the laboratory, and the kit should be used within 12 months of purchase.
Why We Partner with ZRT Laboratory
At Hormone Lab UK, every home test kit is analysed by ZRT Laboratory, a globally recognised, CLIA-certified diagnostic and research laboratory specialising in hormone testing, thyroid testing, fertility testing, adrenal function, neurotransmitter analysis, cardiometabolic health, heavy metals, and wellness testing. Founded in 1998 by renowned biochemist and breast cancer researcher Dr. David Zava, PhD, ZRT has become one of the world's leading laboratories for advanced functional health testing.
With more than 11 million laboratory tests performed and healthcare professionals in over 96 countries relying on its expertise, ZRT is recognised for scientific excellence, analytical accuracy, and continuous innovation. The laboratory pioneered at-home saliva hormone testing, introduced the first commercially available dried blood spot (DBS) hormone tests, and developed Dried Urine Testing (DUTS), helping make advanced laboratory diagnostics more accessible and clinically meaningful.
Every sample is analysed using state-of-the-art LC-MS/MS and ICP-MS technology under rigorous quality control standards, providing highly accurate, clinically reliable results. ZRT also collaborates with leading organisations, including the Centers for Disease Control and Prevention (CDC), the National Institutes of Health (NIH), and major universities, supporting ongoing research and advances in laboratory medicine.
By partnering with ZRT Laboratory, Hormone Lab UK gives customers throughout the UK and Europe access to internationally trusted, research-backed laboratory testing that supports informed, personalised healthcare decisions.
