- Basal body temperature
A woman's resting temperature upon awakening in the morning before any activity; the temperature rises slightly when ovulation occurs and remains at the higher level until the next menstruation. Recording and charting BBT is one of the oldest and most popular methods for predicting ovulation.
- BBT
A woman's resting temperature upon awakening in the morning before any activity; the temperature rises slightly when ovulation occurs and remains at the higher level until the next menstruation. Recording and charting BBT is one of the oldest and most popular methods for predicting ovulation.
- Beta hCG test
(BhCG) - A blood test by which the level of the hormone BhCG is evaluated to determine pregnancy.
- BhCG
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Beta hCG test (BhCG) - A blood test by which the level of the hormone BhCG is evaluated to determine pregnancy.
- Biochemical pregnancy
A positive hCG level in the blood that fails to continue to rise and does not lead to a clinical pregnancy.
- Biopsy
A fragment of tissue removed for study under the microscope.
- Blastocyst
A fluid-filled sphere of cells developed from a zygote. The embryo develops from a small cluster of cells in the center of the sphere, and the outer wall of the sphere becomes the placenta. The blastocyst, also called a preimplantation embryo, begins to implant into the lining of the uterus 6 to 7 days after fertilization.
- Blighted ovum
A general term used to mean a fertilized egg that fails to survive after implantation in the uterus.
- Blood-testis barrier
The barrier that separates sperm from the bloodstream.
- Bromocriptin
A synthetic compound that interferes with the pituitary gland's ability to secrete prolactin. Bromocriptine is often prescribed for hyperprolactinemia.
