"the cutoff for diagnosis of polyhydramnios is dependent on local guidelines with either 24 cm 5,6 or 25 cm 7 taken to be the upper limit of normal."
Expected headings
"Values"
"value changes with age: the 5th percentile for gestational ages is most often taken as the cut-off value, and this is around an AFI of 7 cm for second and third-trimester pregnancies; an AFI of 5 cm is two standard deviations from the mean"