Standard No.:	WS 322.1-2010
English Name:	Technical standards of prenatal screening and diagnosis for fetal common chromosomal abnormalities and open neural tube defects Part1.Maternal serum prenatal screening in second trimester
Chinese Name:	胎儿常见染色体异常与开放性神经管缺陷的产前筛查与诊断技术标准 第1部分：中孕期母血清学产前筛查
Chinese Classification:	C59
Professional Classification:	WS    Professional Standard - Hygiene
Issued by:	Ministry of Health
Issued on:	2010-06-08
Implemented on:	2010-12-31
Status:	abolished
Abolished on:	2016-12-28
Language:	English
File Format:	PDF
Word Count:	4500 words
Price(USD):	130.00
Delivery:	via email in 1~3 business day

WS 322的本部分规定了中孕期母血清学产前筛查的工作程序、知情同意书、筛查资料和标本的采集、实验室检测、结果的告知及对高风险孕妇的处理和追踪随访等要求。
本部分适用于对分娩时年龄在35岁以下的中孕期孕妇进行胎儿常见染色体异常（唐氏综合征与18一三体综合征）和开放性神经管缺陷的血清学产前筛查。