The ZRT Laboratory Blog

The ZRT Blog is an extensive resource for patients and health care providers searching for health and hormone testing information. Here, you can read about ZRT’s cutting edge research, advances in testing, wellness advice, and health industry highlights.



Margaret Groves

Margaret N. Groves, M.Phil., ELS is a scientific and technical writer for ZRT Laboratory. She researches the medical literature on topics relevant to ZRT testing products, contributes to the ZRT product information supplied to health care providers, and as part of the research team helps with writing up ZRT’s research studies for publication.


Recent Posts

Research Updates – Trials of HRT Started in Early Menopause

Posted by Margaret Groves on Friday, 15 September

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One of the primary objectives of the Women's Health Initiative was to see if postmenopausal hormone replacement therapy (HRT) improved long-term risk of coronary heart disease, among other chronic diseases.

However, the combined estrogen/progestin (Prempro) arm was halted in 2002, citing that the participants’ risk of cardiovascular disease outweighed any potential benefit of HRT in the prevention of colorectal cancer and bone fracture [1]. The conjugated equine estrogen (CEE)-only arm was also halted in 2004 citing no improvement in heart disease risk but an increased incidence of stroke, and no benefit in terms of fractures, although there was a reduced breast cancer risk [2].

Yet the WHI investigators published a report this week [3] after a cumulative follow-up of 18 years finding that there was no overall increase in all-cause, cardiovascular, or cancer mortality as a result of either Prempro or CEE-only treatment during their participation in the trial.

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Your Checklist for Partnering with a Quality Lab

Posted by Margaret Groves on Thursday, 20 April

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Quality testing is a vital component of a physician's evaluation of a patient with a view to successful treatment. But how can health care providers ensure that the lab they are working with is giving them the quality they need?

We’re often asked "Why should I partner with your lab? What distinguishes you from the others?" While many providers are expecting the obvious answers like fair prices and fast, reliable results – which are definitely important – we like to dig a bit deeper than this.

At ZRT Laboratory, we think there are six important measures to help determine the quality of a lab.

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Webinar Review: The Nuts & Bolts of Neurotransmitter Testing

Posted by Margaret Groves on Friday, 03 March

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ZRT's senior research scientist Dr. Kate Placzek presented a webinar about the neurotransmitter testing ZRT began offering last year.

Neurotransmitter testing is a natural progression of the wellness testing options that ZRT has developed and offered over the years, and in some ways encompasses many aspects of the testing in other areas such as steroid hormone and metabolite testing, adrenal and thyroid health assessment, cardio-metabolic parameters, and heavy metals.

She addresses these questions that are commonly asked by health care providers who call in to enquire about this testing.

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Endocrine Disruptors: What They Are & How To Avoid Them

Posted by Margaret Groves on Friday, 17 February

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As a hormone testing lab, ZRT understands the importance of a well-balanced endocrine system in maintaining overall health.

Hormone balance is achieved through multiple feedback mechanisms, and when any part of the system is thrown out of whack by forces beyond its control, there is a knock-on effect on the rest of the body systems that are under endocrine control.

Such forces can include extreme or chronic stress, or exposure to environmental toxins that enter the body through the air we breathe or in our diets. Substances in the environment that upset the endocrine system are known as endocrine-disrupting chemicals, or EDCs.

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