Mother, Baby, Universe

Pregnancy: Conception – Maternity – Trimester
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 […]

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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 […]

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Ultrasound types and first trimester ultrasound purpose

Ultrasound types and first trimester ultrasound purpose

How pregnancy ultrasound works Ultrasound imaging uses sound waves emitted from a transducer. These waves travel through tissue and return as echoes that are converted into images on a screen. In pregnancy, ultrasound can show fluid-filled spaces such as the gestational sac, soft-tissue structures such as the uterus and ovaries, and, later in the first […]

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Choosing an OB-GYN midwife and high-risk specialist

Choosing an OB-GYN midwife and high-risk specialist

Understanding the main types of pregnancy clinicians Pregnancy care can be organized in several safe and evidence-informed ways, depending on the pregnancy and the local healthcare system. An OB-GYN is a physician trained in obstetrics, gynecology, surgery, and management of pregnancy complications. OB-GYNs can provide prenatal care, perform cesarean sections, manage hypertensive disorders, treat hemorrhage, […]

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Prenatal visit schedule and frequency of doctor visits

Prenatal visit schedule and frequency of doctor visits

Why prenatal visit frequency matters Prenatal visits create repeated opportunities to identify risk early, track physiologic adaptation to pregnancy, and support shared decision-making. Many complications, including gestational hypertension, preeclampsia, gestational diabetes, fetal growth restriction, anemia, infection, and mood disorders, may be silent or nonspecific at first. Regular assessment improves the chance of detecting patterns before […]

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First prenatal visit and what to expect

First prenatal visit and what to expect

When to schedule the first prenatal appointment Many clinics schedule the first prenatal visit around 8 weeks of pregnancy, calculated from the first day of the last menstrual period, although timing can vary. Some people are seen earlier, especially if they have bleeding, pain, a history of ectopic pregnancy, recurrent pregnancy loss, fertility treatment, significant […]

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Normal hCG levels and slow rising hCG explained

Normal hCG levels and slow rising hCG explained

What hCG is and why it rises in early pregnancy hCG is produced by trophoblastic tissue, which later contributes to the placenta. After implantation, hCG enters the bloodstream and then the urine, which is why it can be detected by both quantitative blood tests and home urine pregnancy tests. One of hCG’s key early roles […]

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Pregnancy blood test (hCG) and quantitative hCG explained

Pregnancy blood test (hCG) and quantitative hCG explained

What is hCG? Human chorionic gonadotropin is a glycoprotein hormone produced primarily by placental trophoblast cells after implantation. Its early role is to support the corpus luteum, which helps maintain progesterone production until the placenta becomes more hormonally self-sufficient. In practical terms, hCG is the hormone detected by pregnancy tests. It enters the bloodstream first […]

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Fetal growth restriction and causes

Fetal growth restriction and causes

What fetal growth restriction means Fetal growth restriction is generally used when a fetus has not achieved its expected growth potential. In clinical practice, suspicion often begins when estimated fetal weight or fetal abdominal circumference is below the 10th percentile for gestational age. However, percentiles are screening tools, not complete diagnoses. A fetus below the […]

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Oligohydramnios and polyhydramnios explained

Oligohydramnios and polyhydramnios explained

Why amniotic fluid matters Amniotic fluid is not simply “water around the baby.” In early pregnancy, it is largely derived from maternal plasma and fluid movement across fetal membranes. Later, fetal urine becomes a major contributor, while fetal swallowing, lung fluid movement, membrane exchange, and placental dynamics help regulate the total volume. Because production and […]

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