Reliable, Repeatable Testing Methods Matter
With limited standardized test methods, ingredient manufactures often develop their own. However, these methods must align with industry standards to ensure reliability and consistency. Testing should be based on established compendia to maintain uniformity and accuracy. But what happens when no established compendial method exists?
Standardizing Success: Why Method Alignment Matters
To optimize testing protocols, manufacturers invest in extensive R&D, generating robust data to validate their methods. This rigorous process ensures that their methods are not only reliable but also transferable – enabling customers and third-party laboratories to verify product potency in compliance with Good Manufacturing Practices (GMPs). This is why method alignment matters.
Equally important is ensuring that testing can be successfully replicated outside the manufacturer’s laboratory. Third-party labs must be able to test products effectively, especially when dealing with blends. Proprietary methods tailored to specific strains can introduce variability, making it difficult for external labs to recover full potency. Overly specialized methods hinder reproducibility, reinforcing the need for standardization. Even more of a reason why method alignment matters.
Save Precious Time with a Knowledgeable Partner
When working with a third-party lab, giving them as much information as possible is important. Knowledge of product and testing methods directly influences turnaround times. The lab should be viewed as a partner, integral to your quality team, to avoid repeated testing or incorrect methods being run. Performing the correct test method the first time ensures that credible products reach the shelves faster.
An Important Note:
Only one enumeration method should be used to calculate the colony forming units (CFU) of the blend. These guidelines are not arbitrary; industry authorities like the Council for Responsible Nutrition (CRN) and International Probiotic Association (IPA) have provided best practice guidance.

When developing probiotic testing methods, it's crucial to consider who will test the product once it's on the shelf—whether it's the FDA, a competitor, or a customer. The testing method should be general enough for any qualified lab to achieve accurate recovery, without requiring proprietary conditions. The ultimate goal is reproducibility: enabling any lab to verify label claims with confidence.
As Your Partner, We're Here to Inform You
What testing topic would you like us to explore next? How can we assist you further? Email us at [email protected] to let us know how we can support you and your team.
Share this Post