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# FDA Scientists Develop Technique for Probiotic Purity
- URL: https://www.fdaweb.com/fda-scientists-develop-technique-for-probiotic-purity/
- Published: 2016-04-04T12:00:00.000Z
- Updated: 2026-09-14T20:52:38.000Z
- Author: David McFarland
- Tags: Drugs, #legacy-id-D5135270

> FDA scientists have provided “proof-of-concept” for a technique that identifies the presence of potentially harmful contaminants in probiotics. “The technique eliminates a product’s beneficial bacteria and allows any potentially harmful contaminants in the product to grow unimpeded, allowing detection of potentially harmful contaminants using standard laboratory methods,” an [agency notice](http://www.fda.gov/BiologicsBloodVaccines/ScienceResearch/ucm493702.htm?ref=fdaweb.com) says.  
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> The scientists developed and used recombinant phage lysins as reagents for improved purity assays for probiotics. Their FDA study forms the basis of a strategy for further development of lysins as tools and reagents to improve probiotic purity testing, which could help advance product development, the agency notice says.