A dye stealer refers to a pregnancy test result in which the test line is darker than the control line. This result generally indicates high levels of human chorionic gonadotropin (hCG) and is typically associated with a strong positive pregnancy result, often later in pregnancy.
Maternal cell contamination (MCC) is the presence of a mother’s cells in a fetal sample used for genetic testing. It can interfere with prenatal diagnoses and is detected through specialized laboratory methods.
In obstetrics, the term “-3 pelvic station” describes the position of the fetal head relative to the maternal pelvis during labor. It indicates that the presenting part is three centimeters above the ischial spines, a measurement used to assess fetal descent and guide clinical management.
Coning in pregnancy refers to the phenomenon where a woman’s abdomen appears cone-shaped, typically observed towards the end of the third trimester. It is caused by the baby dropping into the pelvis, affecting posture and breathing.
PDG (Pregnanediol Glucuronide) is a urinary metabolite of progesterone used to confirm ovulation and monitor early pregnancy. Measuring PDG levels provides a non-invasive way to assess luteal phase adequacy and pregnancy viability.