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ID:994 Downs Syndrome Screen
Search Links: General Info : Protocols : LabTestsOnline

Description Combined test performed between 11 weeks 2 days to 14 weeks 1 day of gestation. The laboratory measures free beta human chorionic gonadotrophin (free beta HCG) and pregnancy associated plasma protein-A (PAPP-A). Quadruple test performed between 14 weeks 2 days to 20 weeks 0 days. The laboratory measures alpha fetoprotein (AFP), free beta human chorionic gonadotrophin (free beta HCG), unconjugated oestriol (uE3) and Inhibin-A
Indication Risk assessment of foetal trisomy 21
Additional Info
Concurrent Testsna
Dietary Requirementsna
Interpretation The results of the biochemistry tests will be combined with scan and demographic data, in a software program to calculate the risk of the pregnancy being affected by Down’s syndrome

DepartmentSpecialist Laboratory Medicine
TubeSerum Gel
Tube Picture
Collection Conditions Combined test, quadruple test
Min. Vol 2mL

Ref. Range (Male)
Ref. Range (Female)
Ref. Range (Paed)
Ref. Range Notes
Units - Not Defined -
IP Acute TAT- Not Defined -
IP Routine TAT- Not Defined -
GP Acute TAT- Not Defined -
GP Routine TAT- Not Defined -
Turnround CommentNA

Originally edited by : DH. Review due on 31/05/2018 09:34:22. Published By RB on 31/05/2017 09:34:22.