Guides
Hand-written explainers for the questions behind our calculators and data pages: how the math works, what the labels mean, and what changed in 2026. Each one links to the tools and peptide pages it explains.
- Reconstitution · 6 minHow to reconstitute peptides: the math, step by stepReconstitution turns a freeze-dried powder into a liquid with a known strength.
- Diluents · 4 minBacteriostatic water: what it is and how it differs from sterile waterBacteriostatic water, often shortened to BAC water, is the diluent most often mentioned for mixing peptides.
- Syringes · 4 minHow to read an insulin syringe: units, mL and tick marksInsulin syringes measure volume, marked in units instead of millilitres.
- Basics · 4 minWhat are peptides? A plain-English guidePeptides are short chains of amino acids.
- Legal · 5 minAre peptides legal? FDA status in 2026, explained"Is this peptide legal?" has three different answers depending on how it reaches you: as an approved drug, as a pharmacy-compounded product, or as a research chemical.
- GLP-1 pipeline · 5 minRetatrutide explained: what it is, trial status and what is still unknownRetatrutide is an investigational weight-loss drug that acts on three hormone receptors at once.
- GLP-1 pipeline · 6 minThe GLP-1 pipeline in 2026: approved drugs and what is in trialsGLP-1 drugs went from one hormone target to two, and the next generation adds a third, or pairs GLP-1 with amylin or glucagon.
- Data quality · 5 minHow we test our data before it reaches a pageMost peptide sites fail in the same two ways: numbers with no source, and pages that look finished when they are not.
Tools