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Test Code SQ PAPP, EPIC LAB1078 First Trimester Screen Fβ

Methodology

Dried Blood Spot Immunofluorimetric Assay

Performing Laboratory

NTD Labs

Specimen Requirements

Container/Tube: Ahlstrom 226 Blood Spotting Card

Specimen Volume: Sufficient to fill 5 collection regions

Specimen Minimum Volume: 2 (but all 5 should be filled, if possible)

Specimen Transport Temperature

Ambient/Refrigerated

Reference Values

Results based on Risk:

Down syndrome cut-off varies with gestation but is approximately 1/300.  T18/13 cut-off is 1/150.

Reporting Title

First Trimester Screen Fβ

Day(s) Test Set Up

Monday through Sunday

Test Classification and CPT Coding

84704-Free βhCG

84163-PAPP-A

82105- AFP