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.



Ted Zava



Recent Posts

Lax Demolition Laws Lead to Toxic Neighborhoods. Goodbye Old House, Hello Lead Dust!

Posted by Ted Zava on Wednesday, 09 November

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Over the past year there has been a plethora of news stories about lead exposure. From Flint, Michigan to Portland, Oregon, details have emerged about schools, homes, water supplies, and other areas and structures contaminated by lead. It hardly surprises me when these pop up in the news, as lead has been used generously in piping, paint, gasoline, ammunition, and batteries, among many other products during the last century.

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Testing "Low" For Lead - Why Your Child's Results May Be Misleading

Posted by Ted Zava on Wednesday, 22 June

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The lead exposure stories that have dominated U.S. news recently now have parents scrambling to determine if their children have been exposed.

Parents are right to be worried because lead affects children differently than adults, primarily due to its detrimental effects on a developing brain and nervous system. I covered 10 need-to-know facts about childhood lead poisoning in an earlier blog.

In most cases if lead is detected in a school or community, free lead screening events for young children (1-5 years old) are made available. Parents should definitely take advantage of these programs, but they should look closely at the results they're getting.

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Lead Poisoning - Is Your Child at Risk? (Plus 10 Need-to-Know Facts)

Posted by Ted Zava on Tuesday, 07 June

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Over the past few months there has been a spike in news stories related to elevated lead levels in U.S. public water systems, beginning with the crisis in Flint, Michigan. This has initiated investigations into current water testing methods and probes into violations that have been swept under the rug.

In many cases the public water supply is safe, but there's a hidden concern you need to know about – the immediate plumbing leading to drinking fountains, faucets, bathrooms, etc. in houses, apartments, schools, and workplaces could be leaching lead into the water. This can be caused by changes in water pH and temperature, additives, or the age and condition of pipes and connections.

Even though leaded gasoline, paint, and plumbing were phased out in the 1970s, they also will remain sources of lead exposure far into the future. 

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Element Testing – Why Sample Type Matters!

Posted by Ted Zava on Tuesday, 03 May

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Urine, serum, plasma, whole blood, red blood cells, feces, hair, fingernails … the list goes on. How do you decide what biological sample(s) to use for element analysis? Can results be compared to scientific literature or do they have clinical significance? Is it possible for values to be elevated or low in one sample type and normal in another? Do test results indicate recent intake, body burden, acute toxicity, chronic toxicity, deficiency, or homeostatic regulation? These are just some of the questions facing a testing laboratory when they want to develop and validate essential and toxic element profiles that will provide clinically meaningful results.

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