Third-party testing exists because manufacturers have an obvious incentive to report favorable test results. An independent lab — paid by the brand or a certifying agency, with no stake in the manufacturer relationship — produces credible numbers.
Categories of third-party testing for CPG:
- Identity testing: Confirms the raw material is what the supplier said it was. Critical for botanicals (where adulteration is common) and high-cost actives.
- Potency testing: Quantifies the active ingredient at the labeled dose. HPLC, GC, or LC-MS are gold-standard methods.
- Heavy metals testing: Lead, cadmium, mercury, arsenic. ICP-MS is the standard method. California Prop 65 enforcement makes this non-negotiable.
- Microbial testing: Total aerobic count, yeast/mold, E. coli, Salmonella, Staphylococcus aureus. Required for batch release on most CPG products.
- Pesticide residue testing: Especially important for botanicals and herbal products. Multi-residue panels.
- Banned substance screening: Required for sports nutrition (NSF Certified for Sport, Informed-Sport).
Reputable third-party labs in the U.S.: Eurofins, Microbac, NSF, ABC Laboratories, Alkemist Labs, Eurofins Scientific (DSM Cohort), SGS, Bureau Veritas. Most produce ISO 17025-accredited results, which is the international standard for testing lab competence.
The cost of a comprehensive third-party batch panel runs $400-1,500 per batch depending on the test menu. Build this into your COGS as a line item — it's an ongoing operating cost, not a one-time fee.