How to Check a Research Supplier

A purity figure without a traceable document cannot be independently verified.

• The certificate of analysis (COA) is lot-specific and available before payment—not an undated typical-results sheet reused across listings.
• The testing laboratory is named and is a separate legal entity from the seller. In-house testing is not third-party testing.
• If accreditation is claimed, the number resolves in the accrediting body’s public directory and its scope covers the method used.
• Identity and purity are reported by separately named methods, not a bare “99% pure.”
• Actual chromatograms or spectra are provided, not only a summary table.

A document that cannot be tied to the exact lot does not reliably support a claim about it.

• The lot number on the product matches the lot number on the COA.
• Manufacture and test dates both appear, and the test date is reasonably connected to the sale date.
• A different lot produces a different COA. One COA for every lot is not per-lot testing.
• The seller will state in writing where synthesis occurred, including country and facility.

A legal business name gives you something concrete to verify.

• A legal entity name appears in the Terms or Privacy Policy and returns an active registration in the applicable public business registry.
• The listed address is checked to determine whether it is a real business location, mailbox store, or virtual office.
• The phone number connects to someone who identifies the company.
• Support answers a narrow technical question with a specific answer inside its stated response window.
• The domain’s creation date and registrar are checked through an ICANN lookup.
• The company name is checked against FDA’s public Warning Letters database.

Payment method affects which dispute options may be available.

• A credit card is accepted and billed under the seller’s own merchant name.
• Any discount for crypto, wire, or peer-to-peer payment is weighed against the loss of ordinary charge-dispute protections.
• Refund, replacement, and reshipment rules are published, including claim windows and responsibility for non-delivery or breakage.
• Checkout runs on the seller’s domain through a named processor—not through a wallet address sent by message.

Handling claims are testable on arrival—check them the day the package lands.

• Stated transport conditions match how the package actually arrives.
• Tracking is issued and the first carrier scan is consistent with the advertised ship-from location.
• A written policy allocates the risk of customs seizure and non-delivery.
• Labels identify the contents and lot number, and the stated handling time is met.

A research-use label does not erase marketing that targets human outcomes.

• Product pages, blogs, FAQs, metadata, and social posts avoid promises about human outcomes, conditions, or benefits.
• No before-and-after imagery or testimonials describe personal use.
• No dosing tables, protocols, reconstitution instructions, or calculators are offered for personal use. Any calculator is limited to math conversion and does not choose a dose.
• Support does not give personal-use or medical advice.
• The seller does not describe a product as FDA approved, FDA certified, or FDA registered in a way that implies approval.

Read reviews as a selected sample, not as neutral data.

• Reviews exist on a platform the seller does not control.
• Critical reviews are visible, and review dates are distributed rather than clustered in suspicious spikes.
• Praise is checked for affiliate links, discount codes, insider relationships, or other incentives.
• The reviewed domain is the exact domain you are evaluating.

Any one of these deserves extra caution and independent verification.

• No COA before payment, no lot number on the COA, or a lot number that does not match the product.
• The named laboratory cannot be found or contacted, or a claimed accreditation cannot be verified.
• Only irreversible payment is accepted and no published refund or reshipment rules exist.
• No legal entity is named or the named entity cannot be found in a public registry.
• A research-use-only seller provides personal dosing guidance, human-use testimonials, or medical advice.
• Any claim that the product is FDA approved or FDA certified without a verifiable product-specific authorization.