A New Test That Uses Saliva Samples to Predict a Person's Age

Assessment might prove useful in solving crimes and improving care, researchers say A new test that uses a saliva sample to predict a person's age within a five-year range could prove useful in solving crimes and improving patient care, University of California, Los Angeles geneticists say. Their test focuses on a process called methylation, a chemical modification of one of the four building blocks that make up DNA.''

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Let Us Analyze The Saliva And Inorganic Components

Composition of saliva

Saliva is a fluid (pH 6-7) a clear, slightly acidic.

Inorganic components

The most abundant component in the saliva is water (about 99%), followed by the ions Na +, Cl - Ca 2 +, K +, HCO 3 -, H 2 PO 4 -, F -, I -, Mg 2 +, thiocyanate. Ionic composition of saliva, which is different from plasma derived from it though. [9]. Hypotonicity facilitate the sensitivity of taste and hydrates of organic compounds that form a protective layer on the oral mucosa. Resultant bicarbonate serves as a buffering agent and calcium and phosphate to neutralize the acid that would otherwise jeopardize the integrity of the tooth mineral.

Organic components

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