Testing
How to interpret East Coast Labs testing language.
Testing language on East Coast Labs points back to the product record: purity result, identity confirmation, method naming, batch or lot, and release context only matter when tied to the exact item in view.
Purity result
Purity should be read as the reported analytical result for the documented batch or lot. The strongest record shows the value and the method used to reach it.
Identity confirmation
Identity language should indicate how the record was supported analytically, not simply that the storefront is making a broad quality claim. Method naming matters because it shows what kind of confirmation sits behind the record.
Product-level evidence
Testing language is only useful when it belongs to the exact product page you are reading. East Coast Labs does not treat generic laboratory slogans as a substitute for record-specific fields or attached documents.
Method language
RP-HPLC and LC-MS in plain terms.
RP-HPLC
Reverse-phase HPLC is the method label East Coast Labs uses when a purity result is being reported for a record. It tells you how the purity figure was established, not that every item on the site carries the same analytical depth.
LC-MS
LC-MS indicates a mass-based identity method. On East Coast Labs it should be read as record-level identity support, not as a floating badge disconnected from batch, dates, or attached documentation.
Reading the record
Defer to the attached product evidence.
When a product page has a COA, reference document, or structured release fields attached, that record-level evidence should take priority over broad guide copy. The guide explains the language; the product page carries the actual documentation state.
If a result, method, or date is missing from the product record, treat that absence as part of the record rather than assuming an implied fallback. East Coast Labs uses testing language to make evidence legible, not to smooth over missing material.
Related guides
Testing terms make more sense when read alongside the quality, certificate, storage, and glossary pages that frame the same product-level evidence and documentation model.