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Maternal Serum Prenatal Screen Second Trimester - Blood

Referred out for testing

Source Blood
Mnemonic MATSC
Specimen Requirements 1 x 3 mL gold top SST tube
Specimen Handling Submit completed AHS Maternal Prenatal Screen Requisition (AHS form CH-1247).

PSC and RRL:
Centrifuge and aliquot before sending to DSC.
Send in separate bag with completed form.

DSC:
Freeze specimens upon receipt in lab.
Additional Information

Test includes:

  • Estriol, Unconjugated (E3)
  • Beta HCG, Quantitative - Blood
  • DIA
  • AFP

Testing should be performed between 15w 0d to 20w 6d gestational age.

Testing Location University of Alberta
Testing Frequency Weekdays
Alternate Name(s) Alpha-1-Fetoprotein (Maternal Serum Prenatal Screen); Biochemical Screen; Downs Syndrome Maternal Triple Screen; Maternal Serum Quad Screen; Quad Screen; Triple Screen, Downs Syndrome
Reference Interval