Biological terrain assessment
This article relies largely or entirely on a single source. (April 2012)
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The biological terrain assessment or BTA is a set of tests used to measure the pH, resistivity, and redox of a person's urine, blood, and saliva. The measurements were first used by L.C. Vincent, a French hydrologist, in the early 1900s. It is often associated with homeopathy and holistic health. The usefulness of the test is debatable and according to physician Stephen Barrett BTA is outdated, apart from pH measurement, is an inferior assessment technique that should not be favored over more modern techniques.
Proponents of the BTA claim that comparing the pH, resistivity, and redox of the blood, urine, and saliva provides a health practitioner an indication of the metabolic processes taking place inside the body. There is no scientific evidence that these measurements provide a medically relevant indication of metabolic processes. Multiple manufacturers of BTA equipment have been prevented from selling their equipment in the United States because they lack Food and Drug Administration (FDA) approval. However, the FDA has not stated whether the BTA is medically useful or not.
The Quantitative Fluid Analyzer (QFA) manufactured by Health Science Company does have FDA classification as a "laboratory instrument for medical purposes" "ion selective", Class 1 510(K) exempt. However it does not have CLIA (Clinical Laboratory improvement Amendment, 1988) waiver.
- Barrett, Stephen (9 April 2002). "Biological Terrain Assessment Is Nonsense". Quackwatch.org. Retrieved 19 June 2019.
- "Biological Terrain Assessment - The Non Invasive Test Your Doctor Isn't Giving You". Comprehensive Health Center. 2018-06-25. Retrieved 2019-06-20.
- Diamond, W.J. (2000). The Clinical Practice of Complementary, Alternative, and Western Medicine. Taylor & Francis. p. 324. ISBN 978-0-8493-1399-8. Retrieved 2019-06-19.
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