Glossary | PepGrades

Accepted evidence: A record that passed the current source, identity, and transformation rules and can contribute to a grade.
Batch or lot: An identifier intended to connect a product group to manufacturing or testing records.
Certificate of analysis (COA): A laboratory report describing one or more measurements performed on a submitted sample.
Comparison group: Offers for the same compound, form, amount, and package structure that can be compared without hiding meaningful differences.
Coverage: How much of the scoring rubric PepGrades could measure with admitted information.
Grade: A letter and score summarizing the observed vendor record under a named rubric version.
Held evidence: A record kept out of scoring while an identity, source, parsing, or other issue remains unresolved.
HPLC: High-performance liquid chromatography, a method commonly used to separate and estimate components in a sample.
Identity testing: Testing intended to help determine whether a sample matches the claimed compound.
LC-MS: Liquid chromatography–mass spectrometry, a combination of separation and mass analysis methods.
Limited: A visible warning that a grade or profile was built without full evidence coverage.
Observed weight: The share of the rubric represented by components that had enough admitted evidence to score.
Profile only: A vendor record with catalog and evidence context but no publishable grade under the current rules.
Purity: An estimate of the main component relative to other detected components under a stated test method; it is not the same as identity, quantity, or sterility.
Rejected evidence: A record that failed a required admission rule and does not contribute to scoring.
Sterility: Absence of viable microorganisms under the conditions of a sterility test. It is different from purity and endotoxin testing.