Sublevel / Research library
What Analytical Reports Can Tell You
An analytical report describes observations made using a specified method on a submitted sample. Reading it responsibly means separating direct measurements from interpretations.
Identity versus purity
Identity testing seeks evidence that a sample contains the expected substance. Purity testing estimates the proportion represented by the target component under the selected analytical conditions. One does not substitute for the other.
Method matters
Chromatographic and mass-spectrometric methods answer different questions. A peak-area percentage, for example, should not automatically be treated as a mass fraction without an appropriate validated relationship.
Quantities and uncertainty
Measured content depends on calibration, preparation, and the reporting basis. Units, detection limits, and measurement uncertainty can materially affect interpretation.
What a report does not prove
A single sample report does not establish all units in a lot, long-term stability, or suitability for human or veterinary use. The report should be interpreted only within its stated scope.