- A sample report documents one identified sample, measured by an independent laboratory on a stated date.
- It does not certify other bottles or batches, and Norwood Labs does not ship a certificate with each order.
- Purity (powders) and concentration (solutions) are different measurements.
- The original report is hosted by the laboratory, with a task number you can check.
- Read the sample ID, date and what was measured before reading the number.
- One result above or below the label is one measurement of one sample, not a verdict on quality.
- Method and uncertainty are on the laboratory's own report. Read them there.
The four published sample reports
As listed on the lab results page:
- Sample 30582. RU-58841 5% solution. 55.08 mg/mL assayed against a 50 mg/mL label. Analysed 7 August 2026.
- Sample 41276. Pyrilutamide (KX-826) 0.5% solution. 5.26 mg/mL assayed against a 5 mg/mL label. Analysed 10 August 2026.
- Sample 20416. RU-58841 powder. 95.58% purity against a 95% or higher claim. Analysed 24 July 2026.
- Sample 10237. Pyrilutamide (KX-826) powder. 96% or higher purity against a 95% or higher claim. Analysed 22 July 2026.
What a sample report can and cannot show
- It shows the identity and measured quantity the laboratory reported for the one sample submitted, on the date analysed.
- It cannot show that another bottle, another batch or a later production run has the same content.
A result above the label claim (55.08 against 50 mg/mL) is one measurement of one sample. This page draws no conclusion about quality from it. Method, uncertainty and calibration are stated on the laboratory's own report and should be read there.
Purity and concentration are not the same thing
A purity figure says how much of a powder is the named compound. A concentration figure says how many milligrams per millilitre a finished solution contains. A powder can be pure and a solution made from it still be weaker than labelled, which is why both kinds of report exist. For a fuller checklist see how to choose a supplier.
How to check a report yourself
- Open the report from the lab results page or scan the QR code on the bottle label.
- Confirm the laboratory (Janoshik Analytical), the task number and the sample name.
- Check the analysis date and compare the sample ID with the batch printed on your label.
- Read the stated method on the report itself before relying on any number.
Research use only
Norwood Labs sells RU-58841 and pyrilutamide (KX-826) as unlicensed research compounds, strictly for laboratory research use. They are not medicines and are not for human consumption.