Specimen:
Collect
- One SST
Also Acceptable:
- One Red Top
Submit
- 0.5 mL (Min:0.3 mL) Serum . Submit Refrigerated. Submit in a Standard Transport Tube.
Special Handling
- Specimen must be drawn between 10 weeks, 0 days and 13 weeks, 6 days gestation (Crown-Rump length (CRL) must be 32.4-83.9 mm).
Requires complete gestational information including CRL.
This test also requires the following information: Patient's date of birth, current weight, number of fetuses present, patient's race, if the patient was diabetic at the time of conception, if there is a known family history of neural tube defects, if the patient has had a previous pregnancy with a trisomy, if the patient is currently smoking, if the patient is taking valproic acid or
carbamazepine (Tegretol), if this is a repeat sample, and the age of the egg donor if in vitro fertilization.
Rejection Criteria
- Hemolyzed specimens
- Plasma
- Specimens exposed to repeat freeze/thaw cycles
Stability
Ambient: 3 Day(s); Refrigerated: 2 Week(s); Frozen: 3 Month(s); Incubated: Unacceptable
Methodology
- Quantitative Chemiluminescent Immunoassay
Performed
Sun-Sat
Reported
3-5 Day(s)
Final interpretative report available when second specimen testing is complete.
Final interpretative report available when second specimen testing is complete.
CPT Codes
- 84163
Interpretive Data
Please see report for interpretive data.
Components
- 93963 - Patients PAPP-A
- 93961 - Nuchal Trans (NT)
- 93240 - Interpretation
- 93248 - Maternal Age
- 93238 - Maternal Weight
- 93202 - Est. Due Date
- 93252 - Gestational Age
- 93246 - Number of Fetuses
- 93245 - Maternal Race
- 91593 - Hx of Aneuploidy
- 93962 - Crown Rump Length
- 93965 - Sonographer Cert
- 93966 - Sonographer Name
- 93967 - Ultrasound Date
- 93969 - Date for Sample 2
- 93970 - EER Maternal Scrn
- 92053 - NUCHAL TWIN B
- 93242 - DATING
- 92052 - SMOKING
- 93241 - SPECIMEN
- 92054 - Crown Rump Twin B
Last Updated: May 20, 2025 @ 9:13 am
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