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.

Cadmium’s Connection to Infertility and Reproduction

Posted by Ted Zava on Thursday, 14 June

Couple distressed over infertility results

Cadmium is a dangerous heavy metal and a known carcinogen. Even though daily exposure is usually relatively low compared to toxins like arsenic, cadmium bioaccumulates with a half-life in the body of 25-30 years.

Essentially, the older you are, the more cadmium you have stored in your body. When cadmium exposure is high, it increases cellular oxidation products that deplete antioxidants like glutathione peroxidase and superoxide dismutase, rendering the body defenseless to further oxidative damage [1].

The most common sources of cadmium exposure are green leafy vegetables and grains, as cadmium is accumulated from contaminated water and soil. Thus, people consuming plant-based diets may be at a higher risk for cadmium exposure. Tobacco, a green leafy plant, concentrates cadmium, which is then highly absorbed through the lungs when smoked, resulting in blood cadmium levels 3 times higher than in non-smokers [2]. In comparison, only a small percentage of cadmium is absorbed in the gut from food. Other sources of cadmium include industrial activities such as smelting and refining, mining, and manufacturing of batteries and cadmium-containing pigments. 

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When to Choose Menstrual Cycle Mapping vs Fertility Testing

Posted by Dr. Sherry LaBeck on Monday, 23 April

Person holding Fertility test kit and Menstrual Cycle Mapping test kit

In 2008 ZRT Laboratory introduced the Fertility Profile to assist women in identifying possible hormonal causes of infertility. More recently ZRT launched the Menstrual Cycle Mapping (MCM) test that allows women to map time points throughout their menstrual cycle, measuring levels of estrogen, progesterone and luteinizing hormone (LH).

Since the MCM test was introduced there has been some confusion as to which test is best to evaluate fertility/infertility. The aim of this blog is to clarify the differences between the two tests and when best to use each.

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Menstrual Cycle Mapping – Your Questions Answered

Posted by Dr. Alison McAllister on Friday, 02 February

Clinician pointing to menstrual cycle mapping graphs

ZRT has launched a month-long hormone assessment in dried urine called the Menstrual Cycle Mapping test. This is what some call the 28-day hormone test. In our profile, we test estrogen, progesterone, and LH levels throughout a month. 

This article tackles some frequent questions providers might have regarding the purpose of the testing and who the ideal patient is.

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Evidence Shows Placentophagy (Placenta Encapsulation) Works

Posted by Dr. Allison Smith on Thursday, 28 December

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The practice of placentophagy – a woman consuming her placenta after she gives birth – is a bit of a hot topic these days. For those of you not familiar with the practice, if you're imagining the Dothraki queen devouring the giant, bleeding heart of a horse with her bare hands, you're probably not alone. In reality, there's much less of a "yuck" factor associated with the process when consuming an encapsulated placenta, which entails heating, dehydrating, pulverizing and then placing the resulting placenta powder into capsules. The result looks more like a vitamin supplement than a bleeding heart.

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