Separate the claim from the evidence
Phrases such as third-party tested, lab tested, and batch tested do not identify what was sampled or which analyses were performed. To evaluate one of these claims, ask for the complete report and the records that connect its sample to the product being sold.
| Claim | Evidence to inspect | What it does not prove |
|---|---|---|
| This product was tested | Matching product or sample description, lot or batch, report number and dates | That another product, size, formulation or lot has the same result |
| A panel was performed | Each listed analyte or organism, method, result, unit and reporting or action limit | That unlisted compounds or organisms were tested |
| The laboratory is accredited | Named accrediting body, current certificate and scope covering the relevant method | Blanket accreditation for every method the laboratory may offer |
| Every batch is tested | A complete current batch inventory and matching report for each claim-covered batch | Coverage from one selected or historical report |
| A seller is GMP qualified | The exact legal entity or authorized brand on the current program list | Association endorsement, product certification or FDA approval |
Match the report to the product and lot
Compare the packaging with the report's sample description, product format, lot or batch, laboratory sample ID and dates. A report for a 60 mL liquid is not automatically evidence for a gallon product, another formulation or a later production lot. If the report contains only the laboratory's sample ID, ask for the supplier record that maps that ID to the package.
Keep all report pages together. A summary page can omit methods, qualifiers, limits or additional results shown later in the document. An analyte that is not listed should be recorded as not shown, not passed, absent or not detected.
Read results with their scope and limits
A numeric result needs its unit and sample basis. Concentration per gram, concentration per milliliter, amount per container and amount per labeled serving are different quantities. The NIST guide to quantities and units explains percentage and parts-per-million notation. Unit conversion is not a serving recommendation or a conclusion about an acceptable limit.
Read terms such as ND, limit of detection, limit of quantitation and reporting limit using the definitions in that report. The EPA guidance on results near detection limits illustrates why a non-detect should not automatically be copied as zero. That guidance is cited for measurement terminology, not as a kratom-product standard.
Verify laboratory and program claims independently
ISO/IEC 17025 sets requirements for the competence, impartiality and consistent operation of testing and calibration laboratories. If a report or seller claims accreditation, check the accrediting body's current directory and the laboratory's scope for the relevant method or analyte. A logo alone does not establish scope.
The American Kratom Association GMP program describes facility and process qualification and expressly says that qualification is not product endorsement. If a seller claims qualification, verify the exact entity or authorized brand on the current qualified-vendor list. A program listing does not replace a matching report for the product and lot in hand.
How to use the reports 4 Leaf Herbals publishes
The Lab Results library currently links selected reports for identified products and samples. Open the complete available document and compare it with your package before relying on its results. The library does not assert that every current inventory batch has a published report, that every report contains the same panel, or that one report applies to another product.
If no matching report is listed, contact 4 Leaf Herbals with the product name, size or format, and lot or batch identifier. Ask for the complete matching record and clarification of any missing field. Do not substitute a report from another bottle size, formulation or lot.
What a report cannot establish by itself
A laboratory report does not establish a safe serving, medical benefit, FDA approval, every-batch coverage, blanket purity or the absence of every possible contaminant. FDA's current kratom information describes the agency's safety and regulatory position. This page explains how to evaluate documents and claims; it is not medical or legal advice.
Correction, October 11, 2026: this page no longer claims universal every-batch testing, a company-wide traceability process, blanket laboratory accreditation, uniform state requirements or association endorsement. Stronger claims require current product-to-batch records, matching reports and the relevant independent documentation.