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A pregnancy test is used to determine whether a female is pregnant or not. The two primary methods are testing for the female pregnancy hormone (human chorionic gonadotropin (hCG)) in blood or urine using a pregnancy test kit, and scanning with ultrasonography. [1] Testing blood for hCG results in the earliest detection of pregnancy. [2]
Human chorionic gonadotropin (hCG) is a hormone for the maternal recognition of pregnancy produced by trophoblast cells that are surrounding a growing embryo (syncytiotrophoblast initially), which eventually forms the placenta after implantation. [ 1 ][ 2 ] The presence of hCG is detected in some pregnancy tests (HCG pregnancy strip tests).
This mechanism is due to the pituitary hormone human chorionic gonadotropin , which is present only in a pregnant woman's urine. If the woman is not pregnant, no sperm or egg would be produced from the male or female frog respectively. Xenopus pregnancy test Injection of sample urine to the dorsal lymph sac of frog
Prenatal testing. To monitor maternal and fetal health and progression, as well as, detect fetal abnormalities during pregnancy. Prenatal testing is a tool that can be used to detect some birth defects at various stages prior to birth. Prenatal testing consists of prenatal screening and prenatal diagnosis, which are aspects of prenatal care ...
Gonadotropins are glycoprotein hormones secreted by gonadotropic cells of the anterior pituitary of vertebrates. [1] [2] [3] This family includes the mammalian hormones follicle-stimulating hormone (FSH) and luteinizing hormone (LH), the placental/chorionic gonadotropins, human chorionic gonadotropin (hCG) and equine chorionic gonadotropin (eCG), [3] as well as at least two forms of fish ...
The hormone human chorionic gonadotropin (hCG) is produced during pregnancy and can be found in a pregnant woman's urine and blood; it indicates the presence of an implanted fertilized egg. An earlier test, known as the AZ test, was developed by Selmar Aschheim and Bernhard Zondek. [2]
As a resident at Johns Hopkins, she discovered that the common pregnancy hormone, human chorionic gonadotropin, hCG was produced by the placenta, not the pituitary gland as originally thought. [3] [4] Thus leading to the development of the hCG pregnancy test that are currently on the market. By the late 1940s, Jones had a copious amount of ...
Chorionic gonadotropin beta. Choriogonadotropin subunit beta (CG-beta) also known as chorionic gonadotrophin chain beta is a protein that in humans is encoded by the CGB gene. [ 3 ][ 4 ][ 5 ] This gene is a member of the glycoprotein hormone beta chain family and encodes the beta 3 subunit of chorionic gonadotropin (CG).
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