Specimen:
Collect
- One SST
Also Acceptable:
- One Red Top
Submit
- 0.5 mL (Min:0.3 mL) Serum in Standard Transport Tube. Submit Refrigerated. Submit in a Standard Transport Tube.
Also Acceptable:
- 0.5 mL (Min:0.3 mL) Serum in Standard Transport Tube. Submit Refrigerated. Submit in a Standard Transport Tube.
Special Handling
- Avoid Repeated Freeze/Thaw Cycles
- 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).
Submit with Order:
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. In addition to the above, if a NT measurement is performed: the date of ultrasound, the CRL measurement, the nuchal translucency (NT) measurement, and the name and certification number of the sonographer is required. NT must be measured when the CRL is between 38-83.9 mm. or If no NT measurement is performed a due date or CRL measurement with the date of ultrasound is required. The NT measurement must also be performed by an ultrasonographer that is certified by the Fetal Medicine Foundation (FMF).
Rejection Criteria
- Hemolyzed specimens
- Plasma
Stability
Ambient: 3 Day(s); Refrigerated: 2 Week(s); Frozen: 12 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: August 29, 2025 @ 9:13 am
Disclaimer:
It is preferable to locate tests on the website and not rely on printed test information, which may soon be out of date. Updated test information can only be guaranteed by using this website.
