Re: Dear Azurefields

David Zava is my father/Owner of ZRT Laboratory.

I am Ted Zava (son), and I perform the element analysis and research.

Who are you Azurefields?

Sorry that you couldn't access my publications through LinkedIn. I didn't know it was private.

Here you go. These are all open access. There are easy access links under the "research" section of our website http://www.zrtlab.com



"Evaluation of the Iodine Loading Test: Urine Iodine Excretion Kinetics after Consumption of 50 mg Iodine/Iodide." Zava T. Townsend Letter 2013; January.

Summary: This study at ZRT Laboratory analyzed Iodine excretion before and after a 50 mg loading dose of iodine/iodide, to determine whether a popular "iodine loading test" can accurately determine iodine sufficiency. The study concluded that the cutoff of 90% excretion used in this test does not allow it to realistically assess whole body iodine sufficiency or deficiency.


"Theodore Zava Responds.” Zava TT. Townsend Letter 2013; November.

Summary: This is a response to a letter criticizing the conclusions made in our previous article, published in Townsend Letter in January 2013, concerning evaluation of the iodine loading test. The response answers all of the concerns raised in this letter and urges its authors to ensure that their patients are correctly assessed for whole-body iodine sufficiency.


"Assessment of Japanese iodine intake based on seaweed consumption in Japan: A literature-based analysis." Zava TT, Zava DT. Thyroid Res 2011; 4 (1):14.

Summary: This thorough review of the pertinent literature clears up much of the confusion surrounding the iodine content of the Japanese diet. The authors present a combined analysis based on dietary recall studies, surveys, urinary iodine testing, and the iodine content of various seaweeds, and estimate the average Japanese iodine intake to be between 1 and 3 milligrams per day.


“Iodine and creatinine testing in urine dried on filter paper.” Zava TT, Kapur S, Zava DT. Anal Chim Acta 2013; 764:64-69.

Summary: This paper describes ZRT Laboratory’s novel test in dried urine for iodine and creatinine. This test makes urine collection for iodine testing simple and convenient, unlike typical liquid urine collections over 24 hours.


Recent International Poster Presentations

“Dried Urine Mercury Stability and Quantification using a Direct Mercury Analyzer.” Zava TT, Zava DT. 12th International Conference on Mercury as a Global Pollutant, Jeju, Korea, June 14-19, 2015.

“Dried Urine Multi-Element Analysis to Aid in the Prevention and Treatment of Iodine Deficiency Disorders; Measurement of Iodine, Bromine, Selenium and Arsenic by ICP-MS, with and without Creatinine Correction.” Zava TT, Zava DT. 30th International Conference of the Society for Environmental Geochemistry and Health, Newcastle-upon-Tyne, UK, June 30 – July 4, 2014.

"Determination of Iodine, Bromine, Selenium and Arsenic by ICP-DRC-MS using Urine Dried on Filter Paper." Zava TT, Zava DT. 83rd Annual Meeting of the American Thyroid Association. San Juan, Puerto Rico, October 16-20, 2013. Abstract published in Thyroid 2013;23(1):A21.


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