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Test Code MIMAY-ZW242 SEQ1 Maternal Screening, Sequential, Specimen #1, hCG, PAPP-A, NT

Important Note

Patient Preparation:

Specimen must be drawn between 11 weeks, 0 days and 13 weeks, 6 days gestation. (Crown-rump length (CRL) must be between 43-83.9 mm at time of specimen collection.)

Submit With Order:

Matertnal serum testing patient history form must be submitted for testing to occur.See the link below for form.  

ARUP Patient History Form

Additional Codes

MIMAY-ZW242 

REF CODE: 3000146

AKA: Sequntial Screen Part 1, First trimester screen

Profile Information

First-trimester screening test for trisomy 21 (T21, Down syndrome) and trisomy 18 (T18). Requires nuchal translucency measurement performed by an ultrasonographer certified by the Fetal Medicine Foundation (FMF). Refer to Maternal Screening, Sequential, Specimen #2, Alpha Fetoprotein, hCG, Estriol, and Inhibin A (3000148) for second-trimester screening test for T21, T18, and open neural tube defects. Risks provided in both first and second trimesters.

Specimen Requirements

Collect: Serum separator tube (SST) or plain red.

Specimen Preparation: Separate from cells ASAP or within 2 hours of collection. 

Specimen Volume: 3mL (Min 1mL)

Sample Storage: Refrigerated

 

 

Specimen Stability

After separation from cells: Ambient: 72 hours; Refrigerated: 2 weeks; Frozen: 1 year (Avoid repeated freeze/thaw cycles.)

Specimen Rejection Criteria

Plasma. Hemolyzed specimens.

Methodology

Quantitative Chemiluminescent Immunoassay (CLIA)

Reference Ranges

By Report

Day(s) Performed

Sun-Sat

Expected TAT

2-4 Days

Performing Laboratory

ARUP Laboratories

500 chipeta Way

Salt Lake City, UT 84108

CPT Code

81508