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Catalog ID Ref QUAD Quad Screen/AFP4 Screening

CPOE Test Name

Ref Quad Screen, Ref Quad

Synonyms

Quad Prenatal Screen, AFP4 Screening

Specimen Type

Serum

Specimen Requirements

3.0 mL blood; gold SST tube

Storage and Transport

Serum stored refrigerated until ready for transport to Integrated Genetic Laboratory

Reference Range

See reference lab report

Interpretation

The four biochemical markers are analyzed to provide risk assessments for fetal Down syndrome, trisomy 18, and open neural tube defects

Causes for Rejection

Specimens other than serum

Turn Around Time

3-8 business days from time of collection

CPT / HCPCS Code

82105, 82677, 84702, 86336

Performing Lab

Integrated Genetic Laboratory

Methodology

Enzyme Immunoassay

Test Consists

AFP, hCG, uE3, dimeric Inhibin-A