Mother, Baby, Universe

Screening Results & Further Testing

Follow-up after abnormal NIPT

Follow-up after abnormal NIPT

What an abnormal NIPT result means NIPT analyzes cell-free DNA in maternal blood and estimates the chance of a fetal chromosomal condition, most commonly trisomy 21, trisomy 18, trisomy 13, and sometimes sex chromosome aneuploidy. Because it is a screening test, a higher-risk result does not prove that the fetus has the condition being screened […]

0 React
0 Comments
NIPT results interpretation and false positives

NIPT results interpretation and false positives

What an NIPT result is actually measuring NIPT, also called cell-free DNA screening, looks at small fragments of DNA circulating in maternal blood. Most of that signal reflects placental DNA, which is usually representative of the fetus but is not always identical to it. That distinction is why the test is best understood as screening […]

0 React
0 Comments
Integrated screening and screening vs diagnostic tests

Integrated screening and screening vs diagnostic tests

What integrated screening is Integrated screening is a prenatal screening strategy that combines information from both the first and second trimesters to estimate the likelihood of a chromosomal condition, especially Down syndrome. In practice, this usually means collecting a first-trimester blood sample, often along with nuchal translucency measurement if that program is part of local […]

0 React
0 Comments
Second trimester screening and quad screen test

Second trimester screening and quad screen test

What second trimester screening means Second trimester screening is a broad term for prenatal tests offered in the middle of pregnancy to refine the chance of certain fetal conditions. In practice, it often refers to maternal serum screening, sometimes combined with ultrasound. The quad screen is the most common blood-based option. It is called a […]

0 React
0 Comments
Nuchal translucency and first trimester screening tests

Nuchal translucency and first trimester screening tests

What nuchal translucency measures Nuchal translucency is the sonographic appearance of the translucent fluid space between the skin and the soft tissues at the back of the fetal neck. It is a normal, transient finding early in pregnancy, but the size of that space can be informative when interpreted within the proper gestational window. The […]

0 React
0 Comments
Amniocentesis procedure risks and recovery

Amniocentesis procedure risks and recovery

What amniocentesis is and why it may be recommended Amniocentesis is a diagnostic test, not a screening test. This distinction matters. Screening tests estimate the chance of a condition, while diagnostic tests can often confirm or rule out specific chromosomal or genetic findings with much greater certainty. In amniocentesis, a clinician uses ultrasound to identify […]

0 React
0 Comments
NIPT accuracy timing and limitations

NIPT accuracy timing and limitations

What NIPT is actually testing NIPT analyzes cell-free DNA fragments in the pregnant person’s bloodstream. A portion of these fragments comes from the placenta and is often used as a proxy for fetal chromosomal status. This is why many clinicians prefer the term cell-free DNA screening: the sample is maternal blood, and the fetal component […]

0 React
0 Comments
Non-invasive prenatal testing (NIPT)

Non-invasive prenatal testing (NIPT)

What NIPT is and why it is used NIPT is a prenatal screening test performed on a blood sample from the pregnant person. The sample contains circulating cell-free DNA, often called cfDNA. During pregnancy, a portion of this cfDNA comes from placental cells, which usually reflect the fetal chromosomal complement. By analyzing patterns in this […]

0 React
0 Comments