The effect of random error on the results of laboratory tests: the role of biological variation

Seyed Manuchehr Nourazarian
Page No. 29-33

In the nature, everything is moving and this movement creates physiochemical variations. The law,
as acts in nature and outside our body, also affects our body. Every moment, millions chemical
reaction occur and billions of atoms and molecules move in body and change their situation. New
Therefore, the quantity molecules are created and many old and worn molecules get out in a way.
of every molecule or matter in the blood and other biological liquids that is measured is changing
constantly. The quantity of these factors is related to the different hours of the day in addition to
age (childhood, adolescence, adulthood and aging).