Jan-ice,
Detailed scan is actually checking that all the development is going well. They will scan the heart, spine, bladder, liver, kidney etc. Seeing the gender is not the main aim but cos it's usually at this stage that gender is seen that's y most of us associates detailed scan as checking gender.
Jan-ice, Emily, crayon,
Till now I've no idea what's baby's head size. The last measurement I had was at 13th week n they were ard 8.9cm in length. Dunno abt the length or head size during my detailed scan at almost 20wks. As for glucose test, till now I've yet to do it. Though at each visit, I'll pee on the urine stick that's all. My next appt is at 25th weeks n I have not been given any instructions to go for glucose test.