PATHOLOGY

Detailed explanation-1: -There is an increased glomerular filtration rate (GFR), which peaks at about the 13th week of pregnancy and can reach levels up to 150% of normal.

Detailed explanation-2: -According to the National Kidney Foundation, normal results range from 90 to 120 mL/min/1.73 m2. Older people will have lower than normal GFR levels, because GFR decreases with age.

Detailed explanation-3: -The kidneys develop between the 5th and 12th week of fetal life, and by the 13th week they are normally producing urine. When the embryonic kidney cells fail to develop, the result is called renal agenesis. It is often detected on fetal ultrasound because there will be a lack of amniotic fluid (called oligohydramnios).