Research Product Documentation Glossary

Research product records often use terms that look similar but describe different parts of a material’s identity, testing, and documentation. This glossary explains common terms in plain language so a laboratory can read labels and analytical reports more consistently.

Research use only: These definitions are general educational information. They do not replace a product label, safety data sheet, validated method, laboratory procedure, or the complete report issued for a specific lot. Xtreme Aminos products are not for human, veterinary, food, clinical, therapeutic, or diagnostic use.

Acceptance criteria

The limits or conditions used to decide whether a reported result meets a stated specification. A result should be read together with the units, method, and acceptance criteria shown on the same document.

Analytical method

The documented procedure used to examine a characteristic of a sample. Different methods can measure different characteristics, and results from unlike methods may not be directly comparable. The complete report should identify the method clearly enough for a qualified reviewer to understand what was tested.

Batch and lot

A batch or lot identifies a defined quantity of material associated with a particular production or handling record. The terms are sometimes used differently across organizations. For traceability, the important step is matching the identifier on the container to the identifier on the COA and inventory record.

Certificate of analysis (COA)

A document summarizing tests and results associated with identified material. FDA Q7A guidance describes certificate information such as the material name, batch number, tests performed, acceptance limits, numerical results when applicable, date, and authorized quality-unit approval. The tests and format vary by material and issuer.

A COA is not a dosing guide, clinical instruction, or statement that a material is approved for human use.

Chromatogram

A visual output from a chromatography method showing detector response over time or another separation axis. Peaks require interpretation in the context of the specific method, sample preparation, instrument settings, reference standards, and complete report. A chromatogram should not be interpreted from an image alone without the associated method and calculations.

Identity test

An analysis intended to support whether a sample has characteristics consistent with the stated material. Identity and purity answer different questions; a purity value by itself should not be assumed to establish identity.

Limit of detection and limit of quantitation

The limit of detection relates to the lowest level at which an analyte can be detected under stated conditions. The limit of quantitation relates to the lowest level at which it can be measured with suitable performance under the method. These limits are method-specific.

Lot-specific document

A report tied to the exact lot or batch identifier on the container. A document for another lot should not be substituted simply because the product name is the same.

Method reference

The identifier or citation for the procedure used. It may refer to an internal method, a compendial method, or another documented procedure. A reference helps a reviewer distinguish one test approach from another.

Purity and assay

These terms can refer to different measurements and should be interpreted according to the method and report. A chromatographic area percentage, mass-based assay, and other reported values are not automatically interchangeable. Read the result label, units, calculation basis, and method notes.

Reference standard

A material used as a comparison or calibration reference in an analytical procedure. The role and qualification of a standard depend on the method and laboratory’s quality system.

Result and units

The reported value must be read with its units and basis. Percent, milligrams, concentration, area percent, and other expressions describe different quantities. Removing the units can change or obscure the meaning.

Sample identifier

The identifier assigned to the portion received or tested by a laboratory. It may differ from the supplier’s lot number. A complete record should preserve the connection between the sample identifier and the original lot.

Specification

A documented set of tests, references to analytical procedures, and acceptance criteria for specified characteristics. A specification is distinct from the measured result.

Traceability

The documented connection among the physical container, label, lot, receiving record, inventory location, sample, test report, and disposition. See the Laboratory Inventory and Lot Traceability guide.

Requesting Xtreme Aminos documentation

Use the Research Product Documentation and COA Requests page for request instructions. Include the product name, listed size, lot or batch number, and order number when available. The Laboratory Receiving Checklist explains how to connect delivery records to lot documentation.

Reference

FDA Q7A Good Manufacturing Practice Guidance for Active Pharmaceutical Ingredients