Casandra
Casandra Test Code QD77194Version 1 (DRAFT)
Performing Lab
Lab Quest DiagnosticsLab Test ID 16145
First Trimester Screen, hCG
Also known as: Human Chorionic Gonadotropin (hCG), Nuchal Translucency (NT), Down Syndrome, Trisomy 18 Screen, MSS
Clinical Use
Order TestUse
This test is used for first‑trimester screening of fetal aneuploidy—specifically for Down syndrome (trisomy 21) and trisomy 18—by combining biochemical markers with nuchal translucency measurement to assess risk.
Special Instructions
Includes measurement of PAPP‑A, hCG, and nuchal translucency, with risk assessments and interpretation. Ordered during the first trimester of pregnancy.
Limitations
Not provided.
Test Details
Methodology
Immunoassay (Multiplex Protein Panel)
Biomarkers
hCG
AnalytehCG • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
PAPP-A
AnalytePAPP-A • Concentration / Level • Quantitative (Continuous) (e.g., copies/mL, % expression)
Result Turnaround Time
0 days
Related Documents
For more information, please review the documents below
Specimen Requirements
Specimen
Serum
Volume
Not provided
Minimum Volume
Not provided
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