Under normal circumstances, the daily rhythm of melatonin secretion causes concentrations in the blood to be “high during the nighttime and nearly undetectable during the daytime, ” says the report in The Journal of Clinical Endocrinology & Metabolism.
Normālos apstākļos, notiekot melatonīna sekrēcijai, tā koncentrācija asinīs nakts laikā ir liela, bet pa dienu — minimāla, sacīts The Journal of Clinical Endocrinology & Metabolism.