Antenatal Screening for Down Syndrome and Other Conditions


Test Information

Test Name

Antenatal Screening for Down Syndrome and Other Conditions

Synonyms

Maternal Serum Screen; PAPP-A; Inhibin A; µE3; FreeB-hCG; AFP; Triple testing; Pregnancy Associated Plasma Protein A

Preferred Specimen

SST

Testing Location

Referral

Forms

View maternal-serum-form

Collection Information

Preparation

  • Use dedicated "Antenatal Screening for Down Syndrome and Other Conditions" request form
  • Collection date details must be recorded on the request form
  • First trimester combined test is blood test plus Nuchal Translucency (NT). Blood must be taken between 9 weeks and 13 weeks 6 days gestation.
  • Second trimester blood test must be taken between 14 weeks and 20 weeks 6 days gestation.
  • Integrated test is blood tests in both the first and second trimesters plus Nuchal Translucency. The first trimester blood must be taken between 9 weeks and 13 weeks 6 days gestation and the second trimester blood between 14 weeks and 20 weeks 6 days gestation.
  • First and second trimester screens are paid for by the Ministry of Health National Screening Unit. The patient is entitled to one or the other. If a fully integrated screen, first trimester, NT plus second trimester is required there is a cost of $190 + GST.

Processing Information

Registration Code

MST

Notes

  • Register to AMAT and copy to requestor
  • Separate within 4 hours of collection; record SPUN time on request form

Site Specific Notes

- Tauranga

Send directly to referral laboratory

- Whakatane

Send directly to referral laboratory

- Rotorua

Send directly to referral laboratory

- Taupo

Send directly to referral laboratory


Methodology

Interpretations

View Interpretations

Contact Information

laura.yau@pathlab.co.nz

External Referral Information

Referral Location

National Screening Unit (LabPlus)

Send Away Transport

Frozen

External Lab Website