Amazon Supplement Compliance: Don't Get Delisted

Everything nobody told you about the testing Amazon actually wants—before your supplement gets yanked off the marketplace and your seller account goes poof.
So you found a hot supplement. Private labeled it. Slapped a shiny label on the bottle. FBA inventory is sitting pretty in an Amazon warehouse. Sales are trickling in. Life is good.
Then you wake up to an email.
"Your listing has been removed. Please provide the following compliance documentation within 7 days..."
Your stomach drops. You don't have any of it. The COA file the manufacturer sent you is a blurry PDF from 2019 that looks like it was faxed through a potato. Panic sets in.
I've watched this exact movie play out with dozens of sellers. Some recover. Some don't. The ones who survive are the ones who got their testing sorted before Amazon came knocking—not after.
This guide is everything I wish someone handed me before I touched a supplement listing. Let's get into it.
Why Amazon Suddenly Gives a Damn About Your Supplements
Here's the short version: Amazon almost got sued into the ground, and your supplement bottle was the smoking gun.
For years, Amazon treated supplements like any other widget. Throw it in a box, ship it, collect your cut. But supplements aren't toasters. If a toaster is defective, it burns your toast. If a supplement is defective, it lands someone in the ER.
The 2021 Bloodbath
In 2021, Amazon rolled out a sweeping compliance policy for dietary supplements sold on their platform. The trigger? A combination of lawsuits, bad press, and the FDA breathing down their neck about counterfeit and adulterated supplements flooding the marketplace.
The policy basically says: if you want to sell supplements on Amazon, prove they're safe, prove they're what you say they are, and prove they were made in a facility that doesn't look like a meth lab.
They didn't enforce it consistently at first. Classic Amazon—announce a policy, then enforce it randomly for two years while everyone wonders if they're serious. Spoiler: late 2024 and into 2025, they got very serious. Enforcement ramped up hard. Sellers who coasted for years without documentation suddenly found their listings nuked.
What Changed in 2025
Amazon started requiring compliance docs proactively during new listing creation for certain supplement categories, not just reactively after complaints. They also tightened the acceptable date range for lab reports—if your COA is older than 12 months, it might as well be toilet paper to them now. Some categories want testing within the last 6 months.
What Amazon Actually Wants From You (Not What You Think)
Let me clear up the most common misconception right now: the spec sheet your supplier emailed you is not documentation. Neither is the sketchy Alibaba conversation where they said "yes friend, very pure, trust me."
Here's what Amazon's bots and human reviewers actually want to see:
1. Certificate of Analysis (COA) — The Real One
A legitimate COA from an ISO/IEC 17025 accredited third-party lab. Not the manufacturer's in-house printout with their own logo on it. Amazon explicitly requires third-party testing. I'll say it louder for the people in the back: YOUR MANUFACTURER'S IN-HOUSE COA DOES NOT COUNT.
The COA needs to show:
- Identity testing (proving your ginseng is actually ginseng, not rice powder)
- Potency/assay (proving you have the amount of active ingredient you claim)
- Heavy metals (lead, arsenic, cadmium, mercury)
- Microbial testing (E. coli, Salmonella, total aerobic plate count, yeast/mold)
2. GMP Certificate
Proof that your manufacturer operates under Good Manufacturing Practices (21 CFR Part 111). This needs to be a current certificate from a recognized certifying body—NSF, UL, SGS, or similar. A "we follow GMP" line on the manufacturer's website doesn't count.
3. Product Labels (Front and Back)
Amazon wants to verify that your label matches what the COA says, and that it follows FDA labeling regs. They check things like:
- Supplement Facts panel formatting
- Proper serving size disclosure
- No disease claims (say "supports immune health," not "cures COVID")
- Full ingredient disclosure
- Proper allergen labeling
- Contact information for the responsible party
4. Letter of Guaranty (Sometimes)
Some categories require a letter of guaranty from the manufacturer stating the product is manufactured under GMP and is not adulterated or misbranded. This is basically a legal pinky-swear from your manufacturer, but Amazon wants it in writing.
5. Finished Product Testing (Increasingly Required)
This is the one that bites people. Amazon is increasingly demanding testing on the finished, packaged product — not just the raw ingredient powder. So if you're selling capsules in a bottle with a label, the lab needs to test those actual capsules from that actual bottle. Not a bulk powder sample from six months ago.
The Exact Tests Amazon Cares About
Not all tests are created equal. Here's what Amazon's reviewers are trained to look for, broken down by category:
Heavy Metals — The Big Four
| Metal | USP Limit (oral) | Why It Matters |
|---|---|---|
| Lead | ≤ 0.5 ppm (varies) | Neurotoxic. Kids' supplements get extra scrutiny. |
| Arsenic | ≤ 1.5 ppm (inorganic) | Rice-based supplements are high-risk. |
| Cadmium | ≤ 0.5 ppm | Common in plant-based and marine supplements. |
| Mercury | ≤ 1.5 ppm | Mostly a concern for fish oil and marine products. |
Pro tip: if your supplement has any herbal or plant-derived ingredient, heavy metals testing is non-negotiable. Plants absorb heavy metals from soil. Your superfood powder from some questionable farm overseas? Yeah, test it twice.
Microbial — Making Sure You're Not Selling Petri Dishes
- Total Aerobic Plate Count (TAPC): General bacteria count. Should be below 10,000 CFU/g for most supplements.
- Total Yeast and Mold Count (TYMC): Should be below 100 CFU/g for most supplements.
- E. coli: Must be absent in 10g.
- Salmonella: Must be absent in 10g.
- Staphylococcus aureus: Must be absent (some categories require this).
Identity — Is This Actually What You Say It Is?
Identity testing confirms the ingredient is what it claims to be. Methods vary by ingredient:
- Botanicals: HPTLC (High-Performance Thin Layer Chromatography) is the gold standard. DNA barcoding is emerging but not yet universally accepted.
- Vitamins/Minerals: HPLC, ICP-MS, or UV-Vis depending on the compound.
- Proprietary blends: You still need to prove each ingredient is present, even if amounts are hidden behind "proprietary blend" labeling.
Potency — Proving Your Label Isn't Lying
Potency testing verifies the quantity of active ingredient matches what's on the label. You need to hit at least 100% of the labeled amount throughout the shelf life (which means overages are standard—manufacturers add extra to account for degradation).
If your label says 500mg of Vitamin C per capsule, the lab better find at least 500mg.
The Horror Stories: What Happens When You Get Flagged
These aren't hypotheticals. These are real situations I've seen play out:
The $47,000 Inventory Hostage Situation
A seller built a solid gummy supplement brand, doing about $30K/month. Amazon requested COAs. The seller sent the manufacturer's in-house testing docs. Amazon rejected them. Re-requested third-party COAs. The seller scrambled to get testing done, but it took 3 weeks. Amazon delisted the product after 7 days of non-response. $47,000 worth of inventory sat in FBA warehouses accruing storage fees. By the time testing was complete and the appeal was filed, the listing had lost ranking entirely. The seller eventually got reinstated but had to relaunch from scratch. Total cost: ~$55K in lost revenue, testing, storage fees, and relaunch PPC.
The "Cure All" Label Disaster
A seller's mushroom supplement label used the phrase "supports the body's natural ability to fight abnormal cell growth." Amazon's compliance team flagged this as an unapproved disease claim. They required: new labels, new COAs matching the new label's Supplement Facts panel, AND a letter from a regulatory consultant confirming the revised claims were compliant. Six weeks and $8,000 later, the listing was back.
The Probiotic Purgatory
A probiotic seller got hit with a compliance request asking for strain-specific identity testing and CFU count at expiry, not at manufacture. The manufacturer's COA only showed CFU at date of manufacture. Amazon rejected it three times. The seller had to commission a stability study proving the CFU count held up through the labeled expiration date. That's a 3-6 month process and cost over $10K.
Moral of these stories: the testing Amazon wants isn't just a checkbox. They're getting smarter, their reviewers are getting better trained, and the days of sliding through with a blurry PDF from a Chinese trading company are over.
How to Structure Your Testing So You Sleep at Night
Here's a practical testing framework. Follow this and you'll be ready when (not if) Amazon comes asking.
Baseline Testing — Every Single Supplement, No Exceptions
- Identity (HPTLC or appropriate method)
- Potency/Assay (at least one active marker compound)
- Heavy metals panel (lead, arsenic, cadmium, mercury)
- Full microbial panel (TAPC, TYMC, E. coli, Salmonella, S. aureus)
- Cost: ~$350–600 per SKU
Category-Specific Add-Ons
Vitamins & Minerals:
- Potency for each declared vitamin/mineral (not just one)
- Disintegration testing (USP <2040>) — especially for tablets
- Cost add-on: ~$200–400
Herbals/Botanicals:
- Pesticide screening (at least the USDA panel or USP <561>)
- Solvent residue testing if extracts are used
- Cost add-on: ~$250–500
Sports Supplements:
- Banned substance screening (Informed Sport or NSF Certified for Sport level)
- Protein content verification (if protein claims made)
- Amino acid profile (if specific amino claims made)
- Cost add-on: ~$800–2,500 (banned substance screening is expensive)
Probiotics:
- Strain-specific identification (16S rRNA sequencing or equivalent)
- CFU enumeration at expiry (requires accelerated stability study or real-time data)
- Cost add-on: ~$1,500–5,000 (stability studies are the budget killer here)
Fish Oil / Marine Supplements:
- Full heavy metals (mercury gets extra scrutiny here)
- PCB testing
- Oxidation/peroxide value
- Cost add-on: ~$300–600
Retesting Cadence
Amazon wants recent data. Here's a reasonable schedule:
- Every batch: Identity, potency, microbial
- Annually per SKU: Full panel including heavy metals
- Every 2 years: Pesticide screen (unless ingredient source changes, then retest immediately)
- Any formula or supplier change: Full panel from scratch
Amazon Compliance Testing: Interactive Decision Tree
Use this to figure out what testing your specific supplement needs right now:
START HERE: What Are You Selling?
Your product contains isolated vitamins/minerals (no herbs)? → Need: Identity, Potency, Heavy Metals, Microbial, Disintegration (if tablets) → Budget: $550–900/SKU
Your product contains herbal/botanical ingredients? → Need: Identity (HPTLC), Potency, Heavy Metals, Microbial, Pesticide Screen → Budget: $600–1,100/SKU
Your product makes sports/performance claims? → Need: Everything from relevant category above + Banned Substance Screening → Budget: $1,200–3,500/SKU
Your product is a probiotic? → Need: Strain ID, CFU Enumeration, Heavy Metals, Microbial → Budget: $1,800–5,500/SKU (stability data is expensive)
Your product is a combination of multiple categories? → You need the tests from ALL relevant categories. Yes, really.
Pricing Table: Real Numbers for Amazon Compliance Testing
Here's what you should actually expect to pay through a competitive lab marketplace. These are per-SKU prices for single-batch testing:
| Test Panel | Vitamins/Minerals | Herbals | Sports Supplements | Probiotics |
|---|---|---|---|---|
| Identity (HPTLC/HPLC) | $120–200 | $150–250 | $150–250 | $200–400 |
| Potency per analyte | $60–120 | $60–120 | $60–120 | — |
| Heavy Metals (4-panel) | $80–150 | $80–150 | $80–150 | $80–150 |
| Full Microbial Panel | $100–200 | $100–200 | $100–200 | $100–200 |
| Disintegration Test | $100–200 | — | — | — |
| Pesticide Screen | — | $200–400 | $200–400 | — |
| Solvent Residue | — | $150–300 | $150–300 | — |
| Banned Substance Screen | — | — | $500–2,000 | — |
| Probiotic CFU Count | — | — | — | $200–500 |
| Strain ID (16S rRNA) | — | — | — | $300–800 |
| Stability Study (accelerated) | — | — | — | $800–2,500 |
| TOTAL (estimate) | $460–870 | $680–1,420 | $1,090–3,220 | $1,680–4,550 |
These are lab testing fees only. Does not include shipping samples, consulting fees, or Amazon-related administrative costs.
Bundle tip: Most labs offer bundled "Amazon Compliance Panels" that package together identity, potency, heavy metals, and microbial at a 15-30% discount vs. ordering each test separately. Always ask about bundles before booking.
How to Handle Amazon's Documentation Requests Without Panicking
Amazon's compliance emails are intimidating but formulaic. Here's how to navigate them:
When the Email Arrives
-
Don't ignore it. The clock starts ticking the moment they send the request. You typically get 7 days, sometimes 14 if you're lucky.
-
Read the whole damn thing. Amazon will list exactly what they want—specific tests, specific document types. Don't send more than they asked for, but definitely don't send less.
-
Check the submitter portal. Amazon moved most compliance submissions to a dedicated portal (not just email attachments). The link will be in the email. Bookmark it.
What to Send — and What NOT to Send
DO send:
- Full COA with lab letterhead, signature, date, and ISO accreditation noted
- GMP certificate that is current and from a recognized body
- Clear photos/scans of actual product labels (front and back)
- A brief cover note that maps each document to what was requested
DO NOT send:
- Spec sheets that came from the manufacturer
- A COA that tests the raw ingredient but not the finished product (Amazon will reject this for finished-product requests)
- Documents with a different brand name or SKU than what's on your listing
- A manufacturer's in-house testing report — even if it uses a third-party lab's name somewhere on it, if Amazon suspects it's not truly independent, they'll bounce it
- Expired or nearly-expired GMP certificates
The Appeal Process If You Get Denied
If Amazon rejects your submission:
- Read the rejection reason carefully. Usually they'll tell you exactly what's missing.
- Don't just resubmit the same docs slightly renamed. Fix the actual gap.
- If you hit a wall with the automated system, open a case through Seller Central and request escalation to the compliance team. Use the magic phrase: "I need a compliance specialist review. My submission meets 21 CFR 111 requirements and has third-party ISO 17025 accredited lab testing." Using regulatory language signals you know what you're doing.
- If you're still stuck after two attempts, contact a compliance consultant. The $500–1,000 they charge is cheaper than weeks of lost sales.
Third-Party vs. In-House Testing: Amazon's Take
I'm going to be blunt because too many sellers get this wrong:
Amazon requires third-party testing. Period.
Your manufacturer's internal QC lab—even if it's a nice one—does not satisfy Amazon's requirement. The certifying body must be ISO/IEC 17025 accredited and independent from the manufacturer.
What "Third-Party" Actually Means to Amazon
- The lab performing the testing has no ownership stake in the manufacturer
- The lab is not employed by or contracted as a subsidiary of the manufacturer
- The lab's ISO 17025 accreditation is from a recognized accreditation body (A2LA, ANAB, Perry Johnson, etc.)
- The lab's name, accreditation number, and signature are clearly on the COA
The Gray Area Nobody Talks About
Some manufacturers' in-house labs are ISO 17025 accredited. Does that count? Technically it's a gray zone. Amazon's policy says "third-party," and in practice, most reviewers will reject an in-house COA even if the lab has accreditation. The rationale: the manufacturer has a financial incentive to pass their own product.
My recommendation: don't gamble. Get an independent lab. The $400 you save using the manufacturer's lab report isn't worth the compliance headache if Amazon rejects it.
How to Find a Legit Third-Party Lab
A good lab for Amazon compliance should:
- Be ISO/IEC 17025 accredited (ask for their certificate number and verify it on the accreditor's website)
- Have experience with dietary supplement testing specifically (a water-testing lab won't know the right methods)
- Know what Amazon requires and be able to produce COAs formatted for compliance review
- Offer a reasonable turnaround (2-3 weeks is standard; if someone promises 24 hours, be suspicious)
The Dirty Secrets Nobody Tells You About Amazon Supplement Compliance
Alright, let's talk about the stuff the YouTube gurus and Shopify course sellers conveniently skip:
1. Amazon's Reviewers Are Underpaid and Overwhelmed
You're submitting technical lab reports to someone who reviewed 80 other listings before lunch. They're looking for specific keywords, specific formatting, specific checkboxes. If your COA is technically perfect but doesn't visually match what they've been trained to look for, it gets rejected. This isn't a conspiracy—it's just how high-volume compliance review works. Make your docs idiot-proof.
2. The "Random" Enforcement Is Actually Not Random
Amazon uses automated risk models. Supplements flagged by customer complaints, supplements with rapid sales spikes (suggesting a trending product that may have cut corners), supplements in high-fraud categories (weight loss, sexual health, nootropics), and new sellers with limited history all get higher scrutiny. If you're in one of those buckets, get your testing done before you launch—you'll almost certainly get asked.
3. Your Competitors Are Reporting You
Here's a fun one: Amazon has a "Report Suspected Violation" button that is incredibly easy to use. Competitors absolutely use it to flag listings for missing documentation. A competitor files a report, Amazon's automated system sends the compliance email, and suddenly you're scrambling. The report could be completely baseless, but Amazon doesn't investigate before requesting docs—they just request them. Dirty? Yes. Legal? Also yes.
4. GMP Certification Is Not Forever
GMP certificates usually expire every 1-3 years. Your manufacturer's certificate from 2018? Expired. Amazon will check the date. A surprising number of manufacturers let their certifications lapse without telling their clients. Always verify the expiration date on your manufacturer's GMP cert, and set a calendar reminder 3 months before it expires.
5. Some Labs Will Sell You a Piece of Paper
I wish I was joking. There are labs that will run minimal (or no) actual testing and issue a COA that looks legitimate to Amazon's automated system. This is not only fraudulent—it's dangerous. If something goes wrong with your product and you're relying on a fake COA, you're personally liable. Don't do it. Find a real lab. If the price seems too good to be true, it probably is.
6. Amazon Can Delist You Even If You're Compliant
Here's the nightmare scenario: you submit perfect documentation. Your COA is flawless. GMP cert is current. Labels are pristine. Amazon's system—or a reviewer having a bad day—rejects it anyway. It happens. Not often, but often enough. The remedy is persistence: reopen the case, ask for escalation, submit the exact same docs with a detailed cover letter explaining how each document satisfies their requirement. Sometimes it takes 3+ rounds. I've seen compliant sellers give up after round two. Don't be one of them.
Real Scenarios & Exactly What to Do
Scenario 1: "I just launched and Amazon flagged me on day 3."
You listed a turmeric supplement, sold 12 units, and Amazon sent the compliance email. You have zero documentation.
What to do: Immediately contact a third-party lab and request an Amazon Compliance Panel—specify it's for a turmeric (Curcuma longa) supplement. Expect 2-3 week turnaround. While waiting, source whatever you can from the manufacturer: at minimum, the GMP certificate and original batch records. Write to Amazon through the case and say: "Third-party testing in progress. Expected completion date is [date]. Can you extend the response window?" They sometimes grant extensions, especially if you respond before the deadline. Do not just go silent—that guarantees delisting.
Scenario 2: "I've been selling for two years without any docs and now I'm panicking."
You've been lucky. Luck runs out. Amazon's enforcement has gotten more aggressive; your number will come up eventually.
What to do: Get testing done proactively, right now, before the email arrives. Order a full compliance panel for every SKU. Yes, it'll cost money. Yes, it's worth it. The alternative is losing your listings, ranking, and revenue overnight. Also: check your GMP certificate's expiration date and your label claims for any disease-like language. Fix those while you're waiting for lab results.
Scenario 3: "My manufacturer says their COA is third-party but it has their logo on it."
It's probably an in-house lab or a captive lab. Even if it operates separately, the association with the manufacturer can trigger a rejection.
What to do: Get independent testing anyway. You can use the manufacturer's COA as supplemental documentation, but lead with your independent lab's COA. The peace of mind is worth the testing fee.
Scenario 4: "I sell a proprietary blend. Amazon wants potency, but the amounts are hidden."
This is a real compliance tightrope. FDA allows proprietary blends to show total blend weight without individual amounts. Amazon, however, wants to verify potency.
What to do: Have the lab test for at least the lead marker compound in each ingredient of the blend. You don't need to disclose individual amounts on the label, but the lab report should show detectable levels of each claimed ingredient. If your blend has 5 herbs and the lab only confirms 1, Amazon may flag it as identity failure on the other 4. Work with a lab that understands dietary supplement compliance—they'll know which markers to test for.
FAQ: Amazon Supplement Compliance
Q: How long does testing take?
Standard panels: 2-3 weeks. Rush service (extra 30-50% cost): 5-7 business days. Stability studies for probiotics: 3-6 months. Plan ahead.
Q: Can I use the same COA for multiple SKUs?
Only if the products are truly identical in formulation and manufactured in the same batch. If the flavors are different, the dosage forms are different, or the batch is different—you need separate testing. Amazon will cross-reference the supplement facts panel on each ASIN with the COA.
Q: What if my manufacturer is overseas and I can't get a GMP certificate?
Run. Seriously. If your manufacturer can't produce a GMP certificate, they're not compliant with FDA regulations, and selling their products on Amazon is a ticking time bomb. Find a manufacturer that is GMP certified. Yes, it'll cost more per unit. No, you can't skip this.
Q: Does Amazon accept COAs from non-U.S. labs?
Yes, as long as the lab is ISO/IEC 17025 accredited by a recognized accreditation body and the report is in English (or has a certified English translation). That said, some reviewers are more skeptical of foreign lab reports. Using a U.S.-based accredited lab reduces rejection risk.
Q: What's the absolute cheapest way to get compliant?
For a simple single-ingredient vitamin supplement: find a lab that offers a bundled Amazon Compliance Panel (~$350–500), use the manufacturer's provided raw material COA only as a reference (not as your primary submission), and make sure every document is clearly labeled and organized before uploading. The cheapest route is doing it right the first time—re-submissions and appeals cost more time and money than proper initial testing.
Q: Do I need to test every single batch, or just once?
Amazon wants current testing. Most sellers test every batch for identity, potency, and microbial (the cheaper tests) and do the full heavy metals and pesticide panel annually. Some do heavy metals per batch if the ingredient is high-risk. At minimum, have a COA dated within the last 12 months for your current inventory. If you're a high-volume seller, batch-level testing is the safe play.
Q: I sell on Amazon Canada/UK/EU too. Do these docs work everywhere?
Mostly. The EU has its own requirements (EFSA regulations, different heavy metal limits). UK post-Brexit has its own scheme. Canada has NPN licensing requirements that go beyond what Amazon US wants. The ISO 17025 COA is globally recognized, but your GMP cert may need to be from a body recognized in that specific market. Don't assume US compliance equals global compliance.
The Amazon Supplement Compliance Checklist
Print this. Stick it on your wall. Check every box before you list anything.
- Finished product tested by ISO/IEC 17025 accredited third-party lab
- Identity confirmed (HPTLC, DNA, HPLC, or appropriate method)
- Potency verified — active ingredients match label claims (≥100%)
- Heavy metals panel: lead, arsenic, cadmium, mercury — all within USP limits
- Microbial panel clean: TAPC, TYMC, E. coli (absent), Salmonella (absent)
- Pesticide screen completed (if botanical/herbal)
- GMP certificate from manufacturer — current, not expired
- Front and back label photos/scans — Supplement Facts panel formatted correctly
- No disease claims on label, listing, or A+ content
- Allergen disclosure complete and accurate
- Responsible party name and address on label
- COA dated within last 12 months (ideally <6 months for high-risk categories)
- Every document saved as clear, searchable PDF with descriptive filename
- Compliance documents organized in a folder ready to upload on day one
How LabQuotes Makes This Whole Thing Less Painful
Here's the reality: finding a lab that does dietary supplement testing, is ISO 17025 accredited, understands Amazon's specific requirements, and can deliver results in a reasonable timeframe—it's a pain in the ass. You're Googling "supplement testing lab" and getting 50 results, half of which only do water testing, and the other half take 8 weeks.
That's exactly why LabQuotes exists.
We connect Amazon supplement sellers with pre-vetted, ISO 17025 accredited labs that specialize in dietary supplement testing for marketplace compliance. You tell us what you're selling, we match you with labs that have capacity and expertise for your specific product category, and you get competing quotes without cold-calling a dozen labs.
What you get:
- Category-matched labs: We don't send your probiotic to a heavy metals-only lab. We match based on capability.
- Real quotes in 24-48 hours: Not "fill out this form and we'll get back to you in two weeks."
- Amazon-specific compliance panels: Labs on our platform know exactly what Amazon requires. They've done this before.
- No markup on lab fees: You pay the lab directly. We don't take a cut. Our business model is the lab pays us a referral fee—your price is the same as going direct, minus the headache.
- Rush processing available: Need testing yesterday? We know which labs can handle rush orders.
If you're selling supplements on Amazon—or planning to—don't wait for the compliance email. Get your testing sorted now. It's cheaper than getting delisted.
Get matched with a supplement testing lab → (Visit LabQuotes.co and select "Amazon Supplement Compliance" as your testing need.)
This guide is for informational purposes. LabQuotes is a lab marketplace connecting buyers with independent testing laboratories. We are not a law firm, regulatory consultant, or Amazon representative. Always verify current Amazon policies through Seller Central.
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Ingredient TestingL-Theanine Supplement Testing: HPLC Purity, L vs D Enantiomer Verification, and Identity
ComplianceSupplement Label Claim Substantiation — Testing Every Word on Your Bottle
Ingredient TestingMaca Root Testing: Identity, Macamide Markers, and Heavy Metal Screening
Test MethodsMelamine Testing Supplements: Detecting Nitrogen Spiking by LC-MS/MS
SpecializedMelatonin Supplement Testing — HPLC Content Verification
Test MethodsMicrobial Limits Testing for Supplements
Test MethodsMicrocystin Testing Algae Supplements: Cyanotoxin ELISA and LC-MS/MS
Ingredient TestingMultivitamin Testing: Multi-Analyte Potency, Label Overage
Test MethodsMycotoxin Testing Supplements: Aflatoxins, Ochratoxin A, Fumonisins
Test MethodsNitrosamine Testing Supplements: NDMA/NDEA Detection by LC-MS/MS
Ingredient TestingNMN Supplement Testing: Purity by HPLC, NMN vs NR Verification, and Regulatory Status
Test MethodsNon-GMO PCR Testing for Supplements — How It Works
SpecializedNSF Certified for Sport vs Informed Sport — Which Testing Program?
SpecializedOmega-3 & Fish Oil Supplement Testing — EPA, DHA, TOTOX
ComplianceOrganic Supplement Certification — Testing Requirements
Getting Started7 Supplement Tests You're Probably Overpaying For (And How to Fix It)
Test MethodsPAH Testing Supplements: Polycyclic Aromatic Hydrocarbons by GC-MS
Test MethodsPesticide Testing for Supplements — Multi-Residue Screen Guide
Ingredient TestingPre-Workout Supplement Testing: Banned Stimulants and Label Accuracy
Ingredient TestingPrenatal Vitamin Testing: Folate Form, Heavy Metal Safety, Potency
Ingredient TestingProtein Powder Testing: Heavy Metals, Amino Spiking, and Real Protein Content
Ingredient TestingPsyllium Fiber Testing: Identity, Microbial Screening for Salmonella, and Water Activity
Test MethodsResidual Solvent Testing for Supplements — USP <467>
Ingredient TestingSaw Palmetto Testing: Fatty Acid Profile, Adulteration, Identity
Ingredient TestingSea Moss Testing: Iodine Content, Heavy Metals, Species Auth
ComplianceSkip Lot Testing for Supplements — When You Can Reduce Testing
Ingredient TestingSpirulina Chlorella Testing: Microcystin, Heavy Metals, Micro
ComplianceStructure/Function Claims Testing Requirements
ComplianceSupplement Facts Panel Testing Requirements
Getting StartedThird-Party Supplement Testing: Why It's Non-Negotiable
Ingredient TestingTurmeric Curcumin Testing: Potency, Lead Chromate, Identity
Test MethodsUSP 2232 Heavy Metals Testing Explained
Ingredient TestingVitamin C Testing: Ascorbic Acid HPLC Potency, Degradation, Stability
SpecializedVitamin D Potency Testing — HPLC vs LC-MS/MS Methods
Test MethodsWater Activity Testing for Supplements — Why It Matters