SEQUENTIAL SCREEN PART I (Maternal Serum)

Sample Reports
Sample Abnormal Report
Sample Normal Report

Test Documentation
Prenatal Screen Information Sheet

Components
Includes: Pregnancy Associated Plasma Protein-A (PAPP-A), Human Chorionic Gonadotropin (hCG) and Nuchal Translucency (NT).
Risk assessment not reported until Full Integrated Screen Part II (Maternal Serum) is completed, unless patient is in the highest risk group for Down Syndrome or Trisomy 18.

Specimen Required
Draw blood in a plain red-top tube. Centrifuge, separate serum from cells within 2 hours of collection and send 1.0 mL serum (0.6 mL minimum) refrigerated in a screw-capped plastic vial. Sample should be collected between 10 weeks 3 days (CRL 36 mm) and 13 weeks 6 days gestation (CRL 79.9 mm). Completed Prenatal Screen Information Sheet located (above) under Test Documentation and in the Appendices of the Test Directory, must accompany sample.

Alternate Specimen
Serum: SST

Rejection Criteria
Moderately hemolzed specimens.

Methodology
Chemiluminescent Immunoenzymatic Assay

Stability
Room Temperature: 5 days; Refrigerated: 7 days; Frozen: 2 months

Reference Range
By report

Performed
Monday-Friday

Turnaround Time4 days
Test CodeSS1
CPT-4 Code (s)
81508 (or 84163, 84702)
LOINC Codes
Screen Result:   49586-1  
Age at EDD (years):   43993-5  
GA (weeks):   49051-6  
GA (days):   49052-4  
Ultrasound Date:   34970-4  
CRL:   11957-8  
Nasal Bone:   53697-9  
Weight (lbs):   58229-6  
Multiple Gestation:   11878-6  
Ethnic Origin:   21484-1  
IDDM:   44877-9  
Smoker:   63638-1  
NT:   12146-7  
PAPP-A:   48407-1  
hCG:   21198-7  
NT MOM:   49035-9  
PAPP-A MOM:   32123-2  
hCG MOM:   55868-4  
Down Syndrome Risk:   43995-0  
Maternal Age Risk for Down:   49090-4  
Trisomy 18 Risk:   43994-3  
Interpretation:   75365-1  

Warde
Medical
Laboratory