Why Urea is decreased in pregnancy?

During pregnancy, urea levels are decreased primarily due to increased renal plasma flow and glomerular filtration rate (GFR). The physiological changes in the body, including hormonal shifts, lead to enhanced kidney function, resulting in more efficient clearance of urea from the bloodstream. Additionally, the increased protein synthesis and metabolic demands of both the mother and fetus contribute to lower urea production. Consequently, these factors collectively lead to reduced urea concentrations in pregnant women.