Test Description
The First-Trimester Screening is an early optional non-invasive evaluation that combines a maternal blood screening test with an ultrasound evaluation of the fetus to identify risks for specific chromosomal abnormalities, including including Trisomy-21, Trisomy-18, Trisomy 13, and Open Neural Tube Defects.
Indications for Testing
The maternal serum screening test is a blood test offered to pregnant women. It helps to inform them of the chance of their unborn child having Down syndrome, Edward syndrome or a Patau Syndrome.
Condition Description
This early First Trimester Screening is performed between the 11th and 13th week of pregnancy.
Test Methods and Limitations
Time Resolved Fluoroimmunoassay (TRFIA)
Detailed Sample Requirements
Serum
Test Details Page
Collection Container(s)
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Serum tubes (red top) |
Collection
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Collect blood by venipuncture, allow it to clot, and separate the serum by centrifugation as quickly as possible. |
Sample Condition
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Serum samples can be stored for at least 30 days at +2 – +8 degrees Celsius |
Shipping
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Ship overnight at +2 – +8 degrees Celsius ensuring receipt within 2 days of collection. |