First Trimester Screen, Hyperglycosylated hCG (h-hCG)
Test code
CPT code(s)*
Test resources
Details
Includes
PAPP-A (Pregnancy-associated Plasma Protein), h-hCG (hyperglycosylated hCG), risk calculation which includes NT (Nuchal Translucency)
Methodology
Chemiluminescence (CL) • Immunoassay (IA)
Assay category
h-hCG: This test was developed and its analytical performance characteristics have been determined by Quest Diagnostics. It has not been cleared or approved by FDA. This assay has been validated pursuant to the CLIA regulations and is used for clinical purposes.
PAPP-A: This test was performed using a kit that has not been cleared or approved by the FDA. The analytical performance characteristics of this test have been determined by Quest Diagnostics. This test should not be used for diagnosis without confirmation by other medically established means.
This test code is for non-New York patient testing. For New York patient testing, use test code 16969.
This test is not available for California patient testing.
Alternative name(s)
Invasive Trophoblast Antigen (ITA),Nuchal Translucency (NT),Hyperglycosylated hCG (h-hCG),Pregnancy-associated Plasma Protein-A (PAPP-A),MSS, 1st Trimester,Down Syndrome and Trisomy 18 Screen
Specimen requirements | |
|---|---|
| Patient preparation | None Specified |
| Preferred specimen(s) | 1.5 mL serum |
| Minimum volume | 0.8 mL |
| Transport container | Transport tube |
| Transport temperature | Room temperature |
| Specimen stability | Room temperature: 14 days Refrigerated: 14 days Frozen: 28 days |
| Reject criteria | Moderate and gross hemolysis • Lipemia |
Reference ranges are provided as general guidance only. To interpret test results use the reference range in the laboratory report.
*The CPT codes provided are based on AMA guidance and are for informational purposes only. CPT coding is the sole responsibility of the billing party. Please direct any questions regarding coding to the payer being billed.
This material contains content from LOINC® (http://loinc.org). The LOINC Table, LOINC Table Core are copyright © 1995-2019, Regenstrief Institute, Inc. and the Logical Observation Identifiers Names and Codes (LOINC) Committee and is available at no cost under the license at http://loinc.org/license.
The tests listed by specialty and category are a select group of tests offered. For a complete list of Quest Diagnostics tests, please adjust the filter options chosen, or refer to our Directory of Services.