QSC: six tests, 4.7 points of spread, and the best one is as good as anything in the directory
Pulling six results into one place because they keep getting quoted individually by whichever side of the argument is winning.
| Date | Compound | Service | Result |
|---|---|---|---|
| 2026-02 | sema 10mg | Janoshik | 98.1% |
| 2025-09 | tirz 10mg | PeptideMeter | 93.7% |
| 2025-04 | sema 5mg | Janoshik | 96.2% |
| 2024-11 | sema 10mg | Medutest | 97.9% |
| 2024-06 | BPC 10mg | Janoshik | 94.8% |
| 2024-01 | sema 10mg | Janoshik | 98.4% |
Mean 96.5%. Range 93.7 to 98.4. That is 4.7 points, the widest in the directory, and the mean is close to useless as a description of what you will receive.
This is what a consistency problem looks like as opposed to a quality problem. The good orders are genuinely good. You just cannot plan around it.
best — the order this archive was captured in
Three of those six are mine and I will state the uncomfortable version: I would rather have a reliable 97.5 than an average of 98.5 built from a 99.4 and a 94.8.
The reason is that you are not buying the average, you are buying one vial. Variance is the thing that hurts you and the mean is the thing that gets quoted.
this is exactly why i publish ranges, and exactly why people quote the averages anyway. i am considering leading with the range next update just to see what happens.
lead with the range. "96.5 (93.7–98.4)" is one extra clause and it changes the entire meaning of the sentence.
same fight as relative versus absolute risk. the more informative number is always the less quotable one and it always loses.
you cannot fix that with formatting, but you can make the bad version harder to write, which is most of what formatting achieves.
alright. range first, mean second, n in brackets. changing the template.
tenth reminder: this is not the reagent multinational with a similar name and it is not the Shanghai company with a similar name. three separate entities, three separate pages. check before you order and check before you accuse.
the naming situation in this industry is genuinely hostile to newcomers
it is, and some of it is deliberate. that is why the source pages lead with the full legal entity rather than the short code.
purely on logistics they are near the top — warehouse delivery in three days, beautifully packed. purely on consistency they are near the bottom. one vendor, two completely different assessments.
Consistency remains the primary open item on this source page and has since 2024. Nothing in this thread changes that; it documents it better.
the honest summary for a new person is "test every order or order elsewhere". edit: which is harsh but i cannot construct a softer version that is still true.
- 1Three of those six are mine and I will state the uncomfortable version: I…6 comments in this branch · started by u/janoshik_junkie