Cyclic variations refer to changes in concentration of analytes that occur in a predictable manner.______ variation is a phrase used to describe reproducible variation that occurs during the course of a single day, and ______ variation is a phrase used to describe reproducible variation that occurs over a period of greater than one day.

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Circadian variation refers to reproducible biological variation that occurs during the course of a single day, and infradian variation refers to reproducible biological variation that occurs over a period of greater than one day, such as in the menstrual cycle.Circannual variation is associated with seasonal variations in diet and climate, seen with Vitamin D concentrations, for example.

Cyclic Variations Refer to Changes in Concentration of Analytes That