Independent supplement testing
Do you really know what's in the bottles you sell?
Most supplement brands never test their products independently. The ones who do find surprises: wrong dosages, missing actives, hidden allergens, shelf life that does not match the label. Find out what is in your bottles before your customers do.
- Reply in 1 business day
- German GMP labs
- No subscription
What you don't test can destroy your brand.
Your contract manufacturer ran their own QC. That only confirms the product met spec on the day it was released. It says nothing about how the product holds up across its shelf life, and it may not cover the safety parameters that matter for food supplements. Independent lab testing is the only way to know what is going out to your customers. Most brands skip it. Most brands shouldn't.
Heavy metals above EU limits
Lead, cadmium, mercury, arsenic. Botanicals and protein powders fail this constantly.
Microbial contamination
Total counts, yeasts and molds, salmonella, E. coli. Liquid products and probiotics are highest risk.
Wrong dose on the label
If the assay says 60% of label claim, the retailer pulls the SKU and your batch is dead stock.
Banned or undeclared ingredients
Especially for sport, weight management, or sexual health categories.
Allergen cross-contact
Gluten, soy, milk traces from shared lines. Retailers want a number, not a promise.
Mycotoxins and contaminants
Aflatoxin, ochratoxin A on botanicals. Limits tightened, and they're audited at port.
How it works · Who we are
Built by Wonnda. For brands that actually want to know.
Wonnda is the leading platform for private label sourcing in supplements. After hundreds of brands, we kept seeing the same pattern: most founders don't know what is inside the bottles they sell. Test My Batch fixes that. Independent testing, German partner labs, and a portal that turns lab work into a dossier your retailers trust.
German partner laboratories
We work with strong GMP and ISO 17025 labs in Germany and send each test to the lab that runs that method best, not the one that is cheapest.
One dashboard, every batch
Submit samples, track lab status, and pull every COA in one place. No PDF email chains, no spreadsheets, no missing documents at audit time.
Retailer-ready reports
Signed PDF dossiers with methods, results, EU limits, and uncertainty values. Formatted the way retailer QA teams need them.
From the field
Real brands. Real consequences.
The 600mg magnesium lie
Scenario
Your magnesium label says 1,000mg. The bottle has 600mg.
Consequence
A competitor runs the test, posts it on LinkedIn, and shreds your brand reputation in a week.
The gluten-free label that wasn't
Scenario
Your raw ingredient was cross-contaminated with gluten. You are labeled gluten-free.
Consequence
A customer with celiac ends up in the ER. Their lawyer calls before you have finished your coffee.
The 45-day vitamin C
Scenario
Your actives degrade faster than your shelf life claims.
Consequence
Customers paying 40 euros for a 90-day vitamin C are getting a 45-day one. Returns spike. Reviews collapse. Amazon delists you.
The turmeric that failed at audit
Scenario
The heavy-metal level in your turmeric is above EU limits. Your contract manufacturer did not routinely test for it.
Consequence
The first you hear of it is when dm or Rossmann audits you and pulls every SKU off the shelf.
The recall that ended year one
Scenario
Microbial contamination during filling slipped past QC. Customers get sick.
Consequence
Authorities issue a recall notice. Your year-one launch becomes your last.
The protein powder spike
Scenario
Your whey supplier blended in cheap free-form amino acids to inflate the protein number on the COA.
Consequence
An independent test exposes the nitrogen spiking. Influencers pile on. Refund requests outpace your weekly revenue.
Your customers trust you with their health. The least you can do is know what is in the bottle.
The protocol
Four steps to full transparency.
Get the transparency your brand deserves. Powered by German GMP-certified labs.
01
Tell us about the product
Two-minute brief: product type, ingredient list, what you want to have tested.
02
We recommend a panel
Within 1 business day you get a fixed-price quote and a turnaround estimate.
03
Ship your samples
You send 3 to 5 units to our German office lab. We identify the best lab for your needs and you'll receive a quote within 24 hrs.
04
Lab test in Germany
The partner lab we chose for you conducts the testing.
05
Receive the report
Retailer-ready report in your dashboard and as a PDF. Signed, dated, defensible.
Panels
Everything tested. Full transparency.
Pick a panel, or let us recommend one based on your product and your target retailer.
Safety and purity
Heavy metals (ICP-MS)·Pesticide residues (GC-MS, LC-MS)·Aflatoxins and mycotoxins·Pyrrolizidine alkaloids (LC-MS/MS)·Microbiological purity
Limits per EU 2023/915, BfR guidance, Ph. Eur. 5.1.4, and EU 2073/2005. Retailer-grade documentation.
Content and compliance
Quantitative content verification (HPLC, GC, UV-Vis)·Allergen detection by ELISA (gluten, soy, dairy, nuts, eggs)·Label and Rechtskonformität review (NemV, Health Claims Regulation)
Actives verified within 10 percent of label claim. Allergens to 5 ppm. Full label compliance review.
Shelf life and stability
Real-time stability·Accelerated stability per ICH Q1A
3-month, 6-month, 12-month, or 24-month protocols. Defensible expiry dating.
Need identity testing, dissolution, or something else specific? Add a note on your quote request.
Built for the three situations we see most.
Private label or contract manufacturing
Check that what your supplier shipped matches what you specified. Before your customers do.
Launching into retail
dm, Rossmann, Müller, BioCompany. We deliver the exact panel each chain's QA team asks for.
Selling on Amazon EU
COA, allergen statement, heavy metals. Avoid the listing suspension that comes from a missing document.
Why us
The standard your customers expect.
You are not buying a test. You are buying a defensible dossier. Built for supplement brands that want proof.
Certificate of Analysis
Magnesium Glycinate
Batch WNDA-2026-0418 · DE
Result
PASS
Pricing
per panel · fixed price · one time
Reply within 1 business day.
FAQ