Quad Screen (Second Trimester) Maternal, Serum, Mayo, RefLab
Alternate Names
AFP, Trisomy 21
SoftLab Order Code
QUAD1
Epic Order Name
Quad Screen (Second Trimester) Maternal, Serum, Mayo, RefLab
Epic Order ID
LAB4399
Laboratory
Reference Lab
Sample Type
Serum
Collection Container
SST - (Gold Top Serum Separator tube)
Alternative Collection Container
Plain Red top
Red/Black Speckle top
Collecting Volume
2.0 mL
Minimum Collecting Volume
1.5 mL
Storage or Stability
Refrigerated
Causes for Rejection
Gross hemolysis
Patient Preparation
Instructions
Collection Instructions:
1. Do not collect specimen after amniocentesis as this could affect results.
2. Within 2 hours of collection, centrifuge and aliquot serum into a plastic vial.
Additional Information:
1. For an assessment that includes neural tube defect results, gestational age must be between 15 weeks, 0 days and 22 weeks, 6 days.
2. Assessments for trisomy 21 (Down syndrome) and trisomy 18 (Edwards syndrome) only are available between 14 weeks, 0 days and 22 weeks, 6 days.