Prenatal Testing Window
Quick answer
Non-invasive prenatal paternity is available from 7 weeks of gestation until birth.
Cell-free fetal DNA reaches a testable concentration around 7 weeks. NIPP can be performed any time from then until birth.
Browse the glossary
- AABB Accreditation
- STR Marker
- 34-Marker Paternity Test
- Combined Paternity Index (CPI)
- Probability of Paternity
- Chain of Custody
- Buccal Swab
- Cheek Swab
- Non-Invasive Prenatal Paternity (NIPP)
- Cell-Free Fetal DNA (cffDNA)
- Amniocentesis
- Chorionic Villus Sampling (CVS)
- USCIS Genetic Testing
- Form I-130
- Legal Paternity Test
- Home Paternity Test
- How It Works
- CLIA Certification
- ISO/IEC 17025
- College of American Pathologists (CAP)
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