A–Z Glossary

Amniocentesis

Amniocentesis samples amniotic fluid containing fetal cells and markers for chromosomal analysis and other targeted prenatal testing.

← Back to A–Z Glossary

Search results for: Amniocentesis

Amniocentesis risks and benefits

Amniocentesis risks and benefits

What amniocentesis involves Amniocentesis is an invasive prenatal diagnostic procedure in which a clinician removes a small sample of amniotic fluid from the uterus using a thin needle, usually under continuous ultrasound guidance. The fluid contains fetal cells and biochemical substances that can be analyzed for chromosomal conditions, selected genetic disorders, fetal infection, and, in […]

CVS testing explained

CVS testing explained

What CVS testing is Chorionic villus sampling is a prenatal diagnostic procedure in which a clinician obtains a very small sample of chorionic villi, the tiny fingerlike projections in the placenta. These cells usually share the fetus’s genetic material because the placenta and fetus develop from the same fertilized egg. The laboratory can then analyze […]

Genetic screening tests explained

Genetic screening tests explained

What genetic screening means Genetic screening is a structured way to estimate whether a person, pregnancy, fetus, embryo, or newborn has an increased chance of a genetic condition. In pregnancy care, screening is often offered to people who have no symptoms and no known family history. This is what makes screening different from targeted genetic […]

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 […]

Do cravings predict baby gender

Do cravings predict baby gender

The short answer: cravings are not a gender test Cravings are one of the most memorable parts of pregnancy, but they are not a reliable predictor of baby gender. A craving for sweets is often said to mean a girl, while salty or protein-heavy foods are said to mean a boy. Other versions of the […]

Belly shape carrying low and carrying high gender myths

Belly shape carrying low and carrying high gender myths

The myth: carrying low means one sex, carrying high means another The classic version of the myth says that a low, forward-projecting abdomen means the baby is a boy, while a higher, wider, or more rounded abdomen means the baby is a girl. In some families and cultures, the prediction is reversed. The details vary, […]

Tests in first second and third trimester explained

Tests in first second and third trimester explained

Understanding prenatal testing: screening versus diagnosis Prenatal tests fall into several broad categories. Routine monitoring tests, such as blood pressure measurement, urine testing, blood counts, and ultrasound assessments, help clinicians follow maternal and fetal health. Screening tests estimate whether a fetus is more or less likely to have certain conditions, such as trisomy 21, trisomy […]