Maternal Serum Screen, First Trimester
0081150
Ordering Recommendation
First trimester screening test for DS and T18. Does not include AFP for ONTD screening. Requires NT measurement performed by an ultrasonographer certified by FMF or NTQR.
Mnemonic
MS FT
Methodology
Quantitative Chemiluminescent Immunoassay
Performed
Sun-Sat
Reported
2-4 days
New York DOH Approval Status
This test is New York DOH approved.
Specimen Required
Patient Preparation
This test requires a nuchal translucency (NT) measurement that has been performed by a certified ultrasonographer. The ultrasonographer MUST be certified to perform NT measurements by one of the following agencies: Fetal Medicine Foundation (FMF) or Nuchal Translucency Quality Review (NTQR). To avoid possible test delays for an ultrasonographer who is new to our database, please contact the genetic counselor at 800-242-2787 extension 2141 prior to sending specimen.

If an NT is unobtainable, order Maternal Serum Screening, Integrated (ARUP test codes 0081062 and 0081064), which can be interpreted without an NT value.

Specimen must be drawn in the first trimester between 11 weeks, 0 days and 13 weeks, 6 days. (Crown-Rump length (CRL) must be between 4.2-8.5 cm). Patient History information is required  
Collect
Serum separator tube or plain red.  
Specimen Preparation
Separate serum from cells ASAP or within 2 hours of collection. Transfer 3 mL serum to an ARUP Standard Transport Tube. (Min: 1 mL)  
Storage/Transport Temperature
Refrigerated.  
Unacceptable Conditions
A crown-rump length greater than 8.5 cm. Plasma. Specimens exposed to repeated freeze/thaw cycles. Hemolyzed specimens.  
Remarks
The First Trimester Maternal Screen also requires the following information: a crown-rump length measurement (cm), ultrasonographer's name and certification number, date of ultrasound, patient's date of birth, current weight, due date, number of fetuses present, patient's race, if the patient has had a previous pregnancy with a chromosome abnormality, physician's name and phone number; and for in vitro fertilization pregnancies, the age of the egg donor.  
Stability
After separation from cells: Ambient: 8 hours; Refrigerated: 2 weeks; Frozen: 2 months  
Reference Interval
By report
Interpretive Data
Note
This test does not screen for Open Neural Tube Defect (ONTD). This test is used to screen for fetal risk of Down syndrome (trisomy 21) and trisomy 18.
CPT Code(s)
(84702;84163) or 81508*

*The 2014 AMA CPT manual contains the component CPT Codes and the new MAAA codes. Please direct any questions regarding CPT coding to the payer being billed.
Components
Component Test Code*Component Chart Name
0080241Estimated Due Date
0080917Maternal Weight
0080920Maternal Screen Interpretation
0080926Maternal Race
0080927Number of Fetuses
0080932Maternal Age At Delivery
0080935Patient's hCG
0080937MoM For hCG
0080938Gestational Age (Exact)
0081065Nuchal Translucency (NT)
0081066Crown Rump Length
0081067Patient's PAPP-A
0081068MoM for PAPP-A
0081069Sonographer Certification #
0081070Sonographer Name
0081071Ultrasound Date
0081074MoM for NT
0081158Family History of Aneuploidy
2003011EER Maternal Serum, First Trimester
* Component test codes cannot be used to order tests. The information provided here is not sufficient for interface builds; for a complete test mix, please click the sidebar link to access the Interface Map.
Cross References
  • Combined Screen
  • First Trimester Screen
  • Ultrascreen