Jian'an CordycepsCompare two cordyceps test reports only after confirming the sample identity, the substance measured, the method, the units and the reporting basis. A higher number is not automatically a better purchasing result. A report for an extract, a different species or a differently prepared sample may not answer the question about your whole cultivated Ophiocordyceps sinensis order.
Build a comparison worksheet before judging the numbers
Keep the original reports and request clarification from the issuing laboratories when terminology differs. The checklist below is a proposed buyer review tool; it does not describe actual Jian'an Cordyceps test results.
| Field | Question for the reviewer |
|---|---|
| Sample and lot | Is each sample linked to the relevant material, grade and batch? |
| Analyte | Do the reports identify the same substance or defined measurement? |
| Method and preparation | Are method versions, preparation and matrix suitability comparable? |
| Units and basis | Are units identical, and are results reported on the same basis? |
| Reporting limits | What do abbreviations and less-than signs mean on each report? |
| Uncertainty and decision rule | How was uncertainty handled when a conformity statement was made? |
What do “not detected” and a less-than sign mean?
Ask the laboratory to define its notation and applicable detection or quantification limit. Do not rewrite a censored result as zero. Two reports with different reporting limits can support different conclusions even when both appear to say that a substance was not detected.
Should a buyer convert the units?
Unit conversion can be straightforward only when the quantity and basis are the same. For example, 1 mg/kg equals 1 µg/g as a mass fraction. This mathematical equivalence does not make different analytical methods equivalent. A dry-basis result and an as-received result need additional information before comparison; do not supply an assumed moisture value.
How should accreditation be checked?
ILAC explains that accreditation bodies maintain laboratory directories and that laboratory activities are defined by their accreditation scope. Check the laboratory's current listing and relevant scope. A logo alone does not establish that the particular analysis falls within that scope. International recognition also does not guarantee acceptance by every regulator or customer.
When should the purchasing decision wait?
- The report cannot be linked to the offered batch.
- The laboratory has not clarified the measurement basis or notation.
- A pass/fail statement lacks the agreed acceptance specification.
- Different methods produce a discrepancy that has not been investigated.
Scope and reference
Eurachem provides general guidance on measurement uncertainty; ILAC explains accreditation and recognition. Neither source sets acceptance limits for this product. Jian'an Cordyceps' Premium Grade, Grade I, Grade II and Broken Pieces are primarily visual grades, not analytical potency categories. No test value, certification or destination approval is asserted here.
Related resources
Reference links
- ILAC frequently asked questions
- Eurachem/CITAC, Quantifying Uncertainty in Analytical Measurement, third edition (2012)
Discuss your purchasing requirements
Send Jian'an Cordyceps your destination, intended use, preferred physical grade and the records you need. Ask which sample and document options can be confirmed for your enquiry.