Pregnancy Test

Introduction

File:Pregnancy test

Draft page - Notice removed when completed.

Links: Implantation | Placenta Development | Week 2 | Pregnancy Test

History

Judith Vaitukaitis and Griff Ross (c1971)

• 1928 - Bernhard Zondek and Selman Aschheim procedure that measured the increase in gonadotrophic substance in the urine of a pregnant woman.
  • Immature mice injection with urine led to ovarian changes after a few days
  • Xenopus clawed frog replaced mice, injection with urine stimulated the females to lay eggs that were easily seen the next day.
• 1960s - immunological tests for chorionic gonadotropin.
• 1972 - Research on hCG at NIH by Judith Vaitukaitis and Griff Ross
• 1978 - USA first home pregnancy tests available.

References

Reviews

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PMID 1117063

PMID 4823920

External Links

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• NIH A thin blue line - The History of the Pregnancy Test Kit | Timeline

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Cite this page: Hill, M.A. (2026, October 29) Embryology Pregnancy Test. Retrieved from https://embryology.med.unsw.edu.au/embryology/index.php/Pregnancy_Test

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© Dr Mark Hill 2026, UNSW Embryology ISBN: 978 0 7334 2609 4 - UNSW CRICOS Provider Code No. 00098G