A laboratory document is relevant only if it can be connected to the product actually purchased. Matching names, lots and dates is essential, yet even that cannot prove every unit is identical.
What has to match
Compare the stated product name, lot or batch identifier, sampling date, tested substance and laboratory method against the package in hand. A report for a different lot says nothing conclusive about this one.
The certificate should identify who issued it and what was measured, including relevant units and detection limits where applicable. An image with a headline percentage alone is not enough information to interpret a result.
A document is not independent verification
A seller can publish a genuine report for a sample that does not represent later stock. Testing a single sample does not guarantee the composition of every unit in that batch, nor does chemical analysis establish microbial sterility.
Van Wagoner and colleagues found discrepancies in online-marketed SARM products. This supports caution about marketing claims, not a claim that any specific current vendor is mislabelling stock.
How to describe uncertainty honestly
A matching report increases traceability, but only independent analysis of the received item can address its actual chemical contents directly. Even then, the analytical method and scope matter.
When a batch number is missing, mismatched or unverifiable, label the evidence as insufficient rather than treating a generic certificate as proof of safety or quality.
In short
- Match the product, batch and test report before relying on a result.
- A test of one sample cannot guarantee every unit or prove sterility.
- Unmatched or undated documents should be described as unverified.
Cited studies
These studies provide context for the article; findings may not apply to non-medical use or products sold online.
Van Wagoner RM, Eichner A, Bhasin S, et al. (2017). Chemical composition and labeling of substances marketed as selective androgen receptor modulators and sold via the internet. JAMA.
Read the study ↗Orizio G, Merla A, Schulz PJ, Gelatti U. (2011). Quality of online pharmacies and websites selling prescription drugs: a systematic review. Journal of Medical Internet Research.
Read the study ↗
Unfamiliar terminology is defined in our glossary. How we research and grade evidence is set out in our editorial standards, and errors can be reported through corrections.
This article is educational. It is not medical advice, a dosing recommendation, or an endorsement of use. Speak with a qualified medical practitioner about your circumstances.