I thought that around1.00 was boy and high was girl 1.5 ish, thats why girls are often wrongly diagnosed with ds? Might be wrong, dont know what a low no means?
For HCG, yes. MoM HCG is generally higher in girls on average than in boys.
Now, I was writing about nuchal translucency neck thickness (not HCG MoM), which is the opposite: it tends to be thicker in boys so boy are more likely to have a higher MoM than girls. Also, keep in mind that NT mm is completely different than NT MoM. MM is millimeters and MoM is multiples of the median.