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Contract Testing Insights
Quality control guides, regulatory updates, and raw material verification insights for supplement manufacturers, cosmetic brands, and contract manufacturers.
Aristolochic Acid in Herbal Supplements: The Carcinogen Your Supplier's COA Won't Catch
Aristolochic acid contamination persists in herbal supply chains through species substitution. Learn how Midwest brands can protect against this Group 1 carcinogen with analytical testing.
FSVP Compliance for Botanical Ingredient Importers: What FDA Expects When Your Raw Materials Cross a Border
If you import botanical raw materials, you're likely an FSVP importer under FSMA. Here's what FDA's foreign supplier verification requirements actually demand.
Amazon Supplement Testing Requirements in 2026: What Midwest Brands Need from an Analytical Testing Laboratory
Amazon's DSVP now demands ISO 17025-accredited COAs. Here's the exact testing scope, formatting rules, and turnaround strategy Midwest supplement brands need to stay listed.
CoA Red Flags: What Analytical Testing Labs Look for When a Supplier's Certificate Doesn't Add Up
How experienced analytical testing labs catch falsified or inaccurate Certificates of Analysis — and what 21 CFR Part 111 requires of supplement brands.
When Your Raw Material Fails Testing: What 21 CFR Part 111 Actually Allows — and What It Doesn't
A raw material fails incoming testing. Before you retest, understand what 21 CFR Part 111 actually permits — and what retesting patterns FDA investigators flag in warning letters.
PFAS Contamination in Botanical Raw Materials: What Midwest Supplement Brands Need to Know
PFAS 'forever chemicals' are appearing in botanical raw materials. Here's what analytical testing laboratories find—and what Midwest supplement brands must act on now.
USP <2232> vs. <232>/<233>: Which Elemental Impurity Standard Actually Applies to Your Botanical Raw Materials
Most botanical supplement COAs reference the wrong USP chapter. Here's the real difference between USP <2232> and <232>/<233> — and how to write specs that hold up.
Lot-to-Lot Variability in Botanical Raw Materials: How to Set Specifications That Don't Create Constant Failures
Most supplement brands set botanical raw material specs from a single COA. Here's how analytical testing labs help you build defensible variability baselines.
Adaptogen Raw Material Testing: The Authentication Failures in Your Ashwagandha, Rhodiola, and Ginseng Supply Chain
Ashwagandha, rhodiola, and ginseng raw materials fail authentication more often than brands expect. Here's what analytical testing laboratories find.
Retest Dates vs. Expiry Dates for Herbal Raw Materials: What Your Stability Protocol Should Actually Include
Confused by retest dates on botanical CoAs? Learn which stability tests matter — and when retesting is legally required under DSHEA and 21 CFR 111.
Collagen Powders and Microbial Risk: What USP <61> and <62> Testing Reveals About Animal-Derived Raw Materials
Collagen's animal origin creates a unique microbial risk profile. Learn what USP <61> and <62> testing finds — and what supplier COAs regularly miss.
Hidden Allergens in Botanical Supplements: What Analytical Testing Labs Find in Raw Materials Under FSMA
The FASTER Act added sesame as the 9th major allergen in 2023 — and it covers dietary supplements. Here's what analytical testing labs find in botanical raw materials.
What 21 CFR Part 111 Actually Requires for Raw Material Identity Testing—And Why Most Supplement Brands Fall Short
21 CFR §111.75 requires scientifically valid identity testing for every botanical lot—supplier COAs aren't enough. Here's what compliant testing looks like.
Designing a Stability Protocol for Botanical Supplements: What an Analytical Testing Laboratory Needs From You to Get It Right
Learn how to design a defensible stability protocol for herbal supplements under 21 CFR Part 111 — what an analytical testing laboratory needs to execute it.
Passing TAMC/TYMC Isn't Enough: The USP <62> Gap That Gets Herbal Supplement Brands in Trouble
Most supplement brands stop at TAMC/TYMC enumeration. Here's why USP <62> specified organism testing is the step your analytical testing laboratory can't skip.
Pyrrolizidine Alkaloids in Herbal Raw Materials: What the FDA Guidance and EU Limits Mean for Your Testing Plan
Pyrrolizidine alkaloids are a real contamination risk in chamomile, echinacea, and mint. Here's what an analytical testing laboratory needs to screen for.
7 Red Flags on a Supplier COA That Should Send Your Raw Materials to an Analytical Testing Laboratory
Most supplement brands accept supplier COAs at face value. Here are 7 warning signs that should send your raw materials to an analytical testing laboratory.
Why Pesticide Residue Screening Catches What Your Botanical Supplier's CoA Misses
Multi-residue pesticide screening via LC-MS/MS catches what supplier CoAs miss. What Midwest supplement brands need to know about botanical raw material compliance.