---
title: BioIVT Blog | Heather Manza
description: Learn valuable insights from the world of biotechnology and pharmaceutical research.
---

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## Heather Manza

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## [![Biomarkers-in-Urine-860x400](https://blog.bioivt.com/hs-fs/hubfs/Biomarkers-in-Urine-860x400.png?width=875&name=Biomarkers-in-Urine-860x400.png) Mar 29 2018 Biomarkers in Urine By Heather Manza In 1938, it was discovered that the urine of a woman could be injected into frogs as a way to test for pregnancy (1). If the frogs laid eggs after the injection, then the woman was pregnant. The assay had a relatively quick turn-around time, was simple, and generally accurate…the principle being that the hCG hormone excreted in urine of pregnant women caused the frogs to lay eggs. However, as always, there was a better way.](https://blog.bioivt.com/biomarkers-in-urine)

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