Explained
Why are some entries missing?
Built from index records dated 2026-10-13 Compiled by an automated pipeline, checked by The Peptide Observer editorial desk How this site works
Most entries in this index are built but not published, because any page that could be mistaken for medical guidance is held back until a suitably qualified person has reviewed it, and no such review has happened.
This page is itself held back under the same rule, because it describes the records behind a withheld entry.
What we actually know
Any one of three conditions is enough to hold an entry back. They are checked automatically for every entry, every time this site is built:
| Condition | Entries held back by it |
|---|---|
| The name is shared with an approved medicine, so a reader could mistake one for the other | 22 |
| The entry carries records from trials in people, which raises what a mistake would cost | 47 |
| The entry sits in the weight and metabolic group, the subject with the most at stake | 17 |
One worked example
Glutathione is held back because its name is shared with an approved medicine. Here is the other reason a page about it would be worth reading carefully: the literature search for Glutathione returned 188,556 records, and this index carries 12 of them. That is less than one hundredth of one per cent of what the search returned.
A page built on 12 records out of 188,556 is not a summary of what is known about anything. It is a handful of index cards. That is true of every entry on this site, and it is the single most important thing to carry away from it.
Nothing is deleted by this rule. The pages exist, they are built, and recording a qualified reviewer publishes them on the next build.
What is not known
- Whether a held-back entry is more or less worth knowing about than a published one. The rule sorts by risk of being misread, not by interest or by quality.
- Whether a published entry has been reviewed by anyone qualified. None of them have. Publication means only that the entry did not trip one of the three conditions.
- What the withheld pages would say after review, because the review has not happened.
How to read this
- The three conditions are the honest part of this site, not a limitation of it. A page that could be mistaken for medical guidance should be harder to publish than one that could not.
- Where a page says an entry is held back, that is the whole reason. There is nothing else behind it.
Read next
Where this comes from
Hold-back conditions and their reasons are recorded on each entry's evidence profile, which also records what was and was not checked when the entry was compiled.