Laboratory Medicine
Laboratory Test Catalogue
First Trimester Screen (Enhanced First Trimester Screen, eFTS) | |
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Test NameFirst Trimester Screen (Enhanced First Trimester Screen, eFTS) |
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Specimen Type / RequirementsContainer Type = Gold (SST) Minimum Testing Volume = 1ml Serum Tube must fill to at least ½ or greater of its vacuum capacity |
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Specimen HandlingCollection Instructions: Collect sample in Gold-Top Serum (SST). 1 of 4 indications Must be checked (See requisition). Write your initials, date and time of collection on the collection label. Stability: Stable at room temperature for 8 hours, refrigerated for 6 days and frozen at -20°C for at least 6 months. Transportation: Transport at room temperature ASAP. Laboratory Staff Instructions: Separate serum or plasma from cells within 2 hours of collection. Sample Rejection Criteria: Grossly hemolyzed samples, Unlabeled or Not Sufficient Quantity samples will be rejected. |
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Required Documentation |
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Turnaround Time (TAT)6 Days |
Test UtilizationOnce per Pregnancy |
Reference ValueSee Interpretative Report |
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Test CodeFTS |
MethodTrisomy 21 and 18 Risks. NT Ultrasound, Bloodwork done between 11+3-13+3 GA |
Testing LocationReferred Out – ON, Canada (ROMSN04) |
Other Information
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