Interim results of Down's screening, please understand friends to help look.

Down to the hospital today, took the screening results, a little worried, please help us to see people who understand, thank you!
MOM value of the test results of the project the reference value unit
uE3 6.59 1.139 0.5 ~ 2.0
hAFP 57.93 u / ml 1.350 0.7 ~ 2.5
Free-hCG B 92.72 mg / ml 6.616 0.25 ~ 2
Trisomy 21 risk of 1 / 140 (high risk) <1 / 270 low-risk,> = 1 / 270 high-risk
Trisomy 18 risk of 1 / 100000 (low risk)
NTD risk is low risk

Questions added:

You must do amniocentesis? My age is 25 years old

Down's screening missed my whining ... ... ... ... but if the doctor says to do amniocentesis to be done wrong, and that himself and his family also rest assured that I did wife to, age, and like you. I heard a little pain ... ...


<1 / 270 low-risk,> = 1 / 270 high-risk
This value is in the end I would like to know good high or low the good, why are you the 1 / 140 is a high risk, while the back of the reference standard seems to be, in turn, ah, "<1 / 270 low-risk." Hospital Report this really strange headache ah!
Experts who want to actively speak to alleviate the maze. . . .