File:Pregnancy test.gif

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Commercial Pregnancy Test

An example of one of the many commercial pregnancy tests available to the public. These preliminary tests are generally confirmed by a clinical urine or blood test.

Test is based upon the detection of human chorionic gonadotrophin - (hCG)

  • Placental hormone initially secreted by cells (syncitiotrophoblasts) from the implanting conceptus during week two, supporting the ovarian corpus luteum, which in turn supports the endometrial lining and therefore maintains pregnancy.
  • Hormone can be detected in maternal blood and urine and is the basis of many pregnancy tests.
  • Hormone also stimulates the onset of fetal gonadal steroidogenesis, high levels are teratogenic to fetal gonadal tissues.


Links: Pregnancy Test | Human Chorionic Gonadotropin | Implantation | Week 2 | NIH - The History of the Pregnancy Test

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current10:48, 3 August 2009Thumbnail for version as of 10:48, 3 August 2009288 × 276 (22 KB)MarkHill (talk | contribs)Pregnancy test available to the public. Based upon the detection of human chorionic gonadotrophin - (hCG) Placental hormone initially secreted by cells (syncitiotrophoblasts) from the implanting conceptus during week two, supporting the ovarian corpus lu
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