Buyer’s questions
Choose from the question you need answered
This directory does not name a best laboratory. It gives you the same fields so you can drop laboratories that do not publish the thing you need.
Methods
Identity, purity, content, endotoxin, microbes, and metals are different questions. A base package that is HPLC retention time is not a base package that includes LC-MS. Filter the table when you need endotoxin, a microbial or sterility test, or a public way to check the report. Read the profile before you treat a filter as a complete menu. Some “yes” answers are optional add-ons.
Accreditation, alignment, and scope
An ISO/IEC 17025 certificate covers the methods on its scope. Alignment, or accreditation pending, is a different sentence. A homepage that says “ISO certified” without a certificate number is unverified until the certificate appears. Apollo Analytical is described only as: operates in alignment with ISO/IEC 17025, accreditation pending. Vanguard Laboratory’s A2LA certificate 6377.01 is real on the laboratory’s scope page, and that page places peptide methods outside the accredited scope.
Reports you can check
Prefer a report number, QR code, or lookup on the laboratory’s own site. Some lookups exist only if the client chooses to publish the report. A PDF that cannot be matched to the issuer is a weaker record. How to read the certificate stays on this site so the directory does not depend on another property.
Who may submit, how long it takes, and what it costs
Some laboratories publish an intake path for individual researchers and vendors. Others say “contact the lab,” and the eligibility rule is not published. Turnaround numbers are not one clock: ask whether it starts at receipt, and separate a routine identity test from a 14-day incubation. Published prices are comparable only when they buy a similar package. Quote-only and unpublished prices stay blank on purpose. Where a page lists two prices for one package, the cell says to confirm with the lab.