Blog
Contract Testing Insights
Quality control guides, regulatory updates, and raw material verification insights for supplement manufacturers, cosmetic brands, and contract manufacturers.
Elemental Impurities in Botanical Tinctures: What Analytical Testing Laboratories Find That Powder Testing Misses
Botanical tinctures concentrate elemental impurities dry powder CoAs can't capture. What analytical testing labs find under USP 232/233 compliance.
Red Yeast Rice Is a Dietary Supplement — Until It Isn't: What Monacolin K Testing Reveals About DSHEA's Gray Zone
Red yeast rice walks a legal tightrope under DSHEA. Here's what HPLC testing of monacolin K content reveals for Midwest supplement brands formulating with RYR.
Elemental Impurities in Ayurvedic Herbs: What USP <232>/<233> Testing Reveals About Your Supply Chain
Ayurvedic raw materials carry disproportionate heavy metals risk. Learn what USP <232>/<233> ICP-MS testing actually finds — and why your supplier CoA isn't enough.
What 'Standardized' Actually Means on a Botanical Extract COA — and When the Numbers Lie
Learn how analytical testing laboratories verify standardized botanical extract claims — and why vendor COA numbers alone are never enough for raw material qualification.
Proficiency Testing Programs: What They Reveal About Your Analytical Testing Lab That an ISO Certificate Doesn't
ISO 17025 accreditation is the starting point, not the finish line. Learn how PT z-scores expose the real performance of any analytical testing lab on supplement matrices.
Microbiological Testing for Herbal Powders: What USP <61> and <62> Require — and Where Raw Materials Fail Most Often
Herbal powders fail incoming microbial limits more than any other ingredient category. Here's what USP <61>/<62> require, the acceptance criteria, and how analytical testing labs measure them.
Proficiency Testing: The Analytical Lab Metric Your Raw Material QC Program Is Probably Ignoring
Why proficiency testing enrollment is the lab credential most raw material QC programs miss — and how to request proof from your testing partner.
Why ANSI/ASQ Z1.4 Alone Won't Protect Your Botanical Raw Material Lots — And What to Do Instead
ANSI/ASQ Z1.4 wasn't designed for botanical powders. Here's what FDA's 21 CFR Part 111 actually requires — and how analytical testing labs fill the gap.
Black Cohosh Adulteration: The Species Substitution Problem Your Supplier CoA Isn't Catching
Up to 25% of commercial black cohosh lots contain Asian Actaea species, not genuine A. racemosa. Here's what HPTLC and DNA barcoding reveal — and what 21 CFR 111 requires.
USP <2232> Elemental Contaminants in Dietary Supplements: What Your Supplier's Heavy Metals Panel Isn't Telling You
Most supplier heavy metals COAs fail USP <2232>. Understand ICP-MS, PDE-based limits, and arsenic speciation for botanical raw material compliance.
What Analytical Testing Labs Find in 'Herbal' Weight Loss Raw Materials That a Supplier COA Will Never Show
FDA's tainted supplement database tops 1,000 entries — weight loss leads every category. Here's what analytical testing labs actually detect that a COA can't.
The Difference Between a Test Report and a Compliance COA: What FDA Auditors Look for Under 21 CFR Part 111
Most supplement brands confuse test reports with specification-driven COAs. Learn what FDA auditors examine under 21 CFR Part 111 and how to close the gap.
Pesticide Residue Testing for Herbal Raw Materials: What Midwest Supplement Brands Need to Know
FDA's 21 CFR Part 111 doesn't require pesticide residue testing for botanical raw materials — here's what that gap means for your compliance program.
Accelerated Stability Testing for Botanical Extracts: What Midwest Supplement Brands Get Wrong About Expiration Dates
Most botanical supplement brands set expiration dates without real data. Here's how an analytical testing laboratory runs a defensible accelerated stability study.
Total vs. Inorganic Arsenic in Botanical Ingredients: Why ICP-MS Speciation Changes the Compliance Picture
For marine-derived botanicals like spirulina and kelp, total arsenic on a CoA can be dangerously misleading. Here's what ICP-MS arsenic speciation actually tells you.
What Analytical Testing Labs Actually Find in Functional Mushroom Raw Materials
Functional mushroom raw materials carry unique risks. See what analytical testing labs find in lion's mane, reishi, and cordyceps that your COA misses.
USP <61> and <62> Microbiology Testing: Why Botanical Ingredients Fail More Often Than You'd Expect
Why herbal raw materials fail USP <61> and <62> microbiology testing at higher rates than other supplement inputs — and what Midwest brands can do about it.
DSHEA Compliance Isn't Enough for Canada: How to Build a Dual-Market Supplement Testing Program
Selling supplements in both the US and Canada? DSHEA and Canada's NHPR diverge sharply on documentation, heavy metals, and botanical identity. Here's what your testing program needs.