Tag: Diurnal variation

According to extensive research, circulating serum iron levels are not static but, in fact, fluctuate throughout a 24-hour period. These variations, known as diurnal fluctuations, are primarily driven by your body's internal biological clock, or circadian rhythm, and can answer the question: can your iron levels change throughout the day?.

According to a study published on bioRxiv, serum iron levels are regulated by the body's endogenous circadian clock, with concentrations typically higher during the day and lower at night. This established scientific fact directly answers the question, **does iron fluctuate daily?**, and highlights why the timing of blood tests is so crucial.