Maternal serum : Depend on weeks gestation:
On 15 weeks : 13-65
On 16 weeks :16-70
On 17weeks :20-95
On 18 weeks :25-105
On 19 weeks :30-130
On 20 weeks :35150
On 21 weeks :45-170
On 22 weeks :60-200

NonPregnant Femal:0.6-10