<unk>  <unk>  is a quantitative estimate of<unk><unk>  and an indicator of fetal well-being. It is a separate measurement from the biophysical profile. *<unk>  is the score (expressed in cm) given to the amount of<unk><unk>  seen on ultrasonography of a pregnant uterus. To determine the<unk> , doctors may use a four-quadrant technique, when the deepest, unobstructed, vertical length of each pocket of<unk>  is measured in each quadrant and then added up to the others, or the so-called "Single Deepest Pocket" technique. * An<unk>  between 8-18 is considered normal. Median<unk>  level is approximately 14 from week 20 to week 35, when the<unk><unk>  begins to reduce in preparation for birth. * An<unk>  24-25 is considered as polyhydramnios.
Amniotic fluid index
CSF glucose
Ventricular-brain ratio
Fetal circulation
Fetal EEG
Surfactant–albumin ratio
Crown-rump length
Fetal movement