Human Chorionic Gonadotropin (hCG), Quantitative Serum Test

Human Chorionic Gonadotropin (hCG), Quantitative Serum Test

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Test #004416This test can be used for the early detection of and on-going monitoring of pregnancy. Determine the presence of hCG in patients with gestational trophoblastic disease; evaluate and monitor male patients with testicular tumors; follow up molar pregnancy. The quantitative hCG assay should be used for nonroutine detection of hCG (eg, ectopic pregnancy, threatened abortions, miscarriages, or very early pregnancy).

Also Known As: Beta-hCG Quantitative, Serum, hCG Quantitative, Serum, Human Chorionic Gonadotropin (hCG), Beta Subunit, Quantitative.

Preparation:

  • No Fasting Required.
  • Test Type: Blood
  • Test Results: 1-2 daysSimilarly to LH, FSH, and TSH, human chorionic gonadotropin (hCG) is a member of the glycoprotein family and consists of two subunits (? and ? chains) that are associated to the intact hormone. The ? chains in all four of these glycoprotein hormones are virtually identical, whereas the ? chains have greatly differing structures and are responsible for the respective specific hormonal functions.hCG is produced in the placenta during pregnancy. In nonpregnant women, it can also be produced by tumors of the trophoblast, germ cell tumors with trophoblastic components, and some nontrophoblastic tumors.Human chorionic gonadotropin consists of a number of isohormones with differing molecular size. The biological action of hCG serves to maintain the corpus luteum during pregnancy. It also influences steroid production. The serum of pregnant women contains mainly intact hCG.Measurement of the hCG concentration permits the diagnosis of pregnancy just one week after conception. The determination of hCG in the first trimester of pregnancy is of particular importance. Elevated values here serve as an indication of chorionic carcinoma, hydatiform mole, or multiple pregnancy. Depressed values indicate threatening or missed abortion, ectopic pregnancy, gestosis, or intrauterine death.Elevated hCG concentrations not associated with pregnancy are found in patients with other diseases, such as tumors of the germ cells, ovaries, bladder, pancreas, stomach, lungs, and liver.2,3
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