HOW PRODUCTS WERE EVALUATED:
How Products were Selected:
Products selected represent those commonly sold and/or available nationally in the U.S. and Canada. ConsumerLab.com purchased products on the open market through retail stores, on-line retailers, and direct sales or multi-level marketing companies. Products were not accepted directly from manufacturers.
Lactase enzyme products were tested for their claimed amount of lactase activity and possible contamination with lead. Lactase enzyme activity was analyzed using the Food Chemical Codex (FCC) methodology (FCC IV or VI assay). Analyses for lead were performed using ICP-MS (Inductively Coupled Plasma-Mass Spectroscopy).
Disintegration of non-chewable, non-capsule, non-enteric coated and non-time release formulations was analyzed by ConsumerLab.com utilizing USP (United States Pharmacopeia) <2040>.
Lactose-free milk products were analyzed for their lactose content using an AOAC (Association of Official Analytical Chemists, International) HPLC method in an independent laboratory.
Products failing to meet any Passing Score were re-tested in a second independent laboratory using similar methods and instrumentation.
ConsumerLab.com may modify or use other appropriate test methods if necessary to test special product formulations.
Passing Score: *
To pass testing, a product must meet the following criteria:
* Passing scores allow for specific margins of technical error associated with each analysis. ConsumerLab.com reserves the right to disqualify a product at any time from passing its testing if it considers such product to present a safety risk or to provide misleading or inaccurate information in its labeling.
** Based on State of California's Prop 65 lead limit. California requires supplements exceeding this limit to bear a warning label regarding lead.
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