What is the normal amniotic fluid index at 38 weeks?
Mar 28, 2023
Source: Cainiu Health
Dr. Lv Aiming
Introduction
At 38 weeks of gestation, an amniotic fluid index (AFI) between 8 and 25 cm is considered normal. During pregnancy, the exact volume of amniotic fluid cannot be accurately measured; assessment can only be made through the amniotic fluid index. At 38 weeks, a normal amniotic fluid volume is approximately 1000 ml, decreasing to about 800 ml at term. An AFI greater than 25 cm indicates polyhydramnios (excessive amniotic fluid), while an AFI less than 5 cm indicates oligohydramnios (low amniotic fluid).
At 38 weeks of gestation, the amniotic fluid index (AFI) is generally considered normal if it ranges between 8 and 25 cm. Both excessive and insufficient amniotic fluid are abnormal conditions that require serious attention. The details are as follows:
During pregnancy, it is impossible to accurately measure the exact volume of amniotic fluid; instead, the amniotic fluid index is used to estimate it. Typically, at 38 weeks of pregnancy, a volume of approximately 1000 ml of amniotic fluid is considered normal, decreasing to about 800 ml at term. An AFI greater than 25 cm indicates polyhydramnios (excessive amniotic fluid), while an AFI less than 5 cm indicates oligohydramnios (insufficient amniotic fluid), both of which require medical evaluation at a hospital.
It is recommended to attend regular prenatal check-ups during pregnancy. If either polyhydramnios or oligohydramnios is detected, prompt medical consultation is necessary to determine the underlying cause and initiate appropriate treatment.
