Guides
Peptide handling guides
The handling rules are the same for every peptide. The numbers are not. Each guide here takes one peptide and puts its molecular weight, vial sizes and concentration table on a single page, with what to look for on that molecule's report.
Why the numbers differ
A 5 mg vial of a 1,419 Da peptide holds about 3.5 micromoles. A 5 mg vial of a 4,800 Da peptide holds about 1. Same label, three times fewer molecules. If you work in molar units the molecular weight decides everything, and it is different for every product.
The identity check you can do yourself
The expected mass on a mass-spec result is the molecular weight. Each guide prints it, so you can compare the observed mass on your vial's report to the expected one. A close match is the identity check passing.
Common questions
Where do the molecular weights come from?
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Published reference values for each compound, listed on the product's Specifications tab. The observed mass for the material you actually receive is on that vial's report.
Is there a guide for every product?
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Not yet. They are written for the peptides people ask about most and added over time. Every product page carries the identifiers and a calculator link in the meantime.
Do the guides cover dosing?
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No. Everything on this site is for in-vitro research. The guides cover identity, concentration and storage.
50 peptides, every one with a report on the vial.
Browse every peptideGuides
- Where to buy a peptide blend in CanadaPeptide blends are sold in Canada as research chemicals. What a blend vial holds, how to reconstitute one, and how to check what is inside it.
- DSIP in Canada: what's sold and how to check itDSIP is sold in Canada as a research chemical for lab use. Vial sizes, prices, how the rules apply, and how to check that a vial is really DSIP.
- What is KPV peptide? The Lys-Pro-Val tripeptideKPV is the three-amino-acid Lys-Pro-Val tail of alpha-MSH, 353.42 g/mol, sold as a 10 mg vial and as a component of two research blends.
- Is GLOW peptide supposed to be blue?Yes, once it is in solution. What turns a GLOW vial blue, why the same copper complex can read purple, and how cold the vial has to be kept.
- Does semax need to be refrigerated?Semax is stable as a dry powder and only needs the fridge once it is in solution. Storage, reconstitution, and what its lab report should show.
- How much GHK-Cu is in KLOW? Reading the blend labelThe 80 mg on a KLOW vial is the combined mass of all four peptides, not the GHK-Cu amount. Where the per-component figure lives on the batch report.
- PT-141 in Canada: availability, storage and identityPT-141 is sold in Canada as a research chemical for lab use. What that means, how long a reconstituted vial lasts, and when it needs the fridge.
- What does TB-500 stand for?TB-500 is named for thymosin beta-4. What the TB and the 500 mean, what TB-500 costs in Canada, and how to check a vial is the real molecule.
- Is CJC-1295 the same as ipamorelin?CJC-1295 and ipamorelin are two different peptides at two different receptors. How they compare, and how to reconstitute and store the blend.
- Is ipamorelin a growth hormone?Ipamorelin is not growth hormone. It is a five-residue secretagogue at the ghrelin receptor. Where it came from, its legal status and why it costs what it does.
- How long can retatrutide stay out of the fridge?Sealed, dry retatrutide is fine at room temperature in transit and briefly on the bench. Mixed retatrutide belongs in the fridge. Why, and which water to use.
- GHK-Cu in Canada: where to find it and what it costsGHK-Cu is sold in Canada as a research chemical. Where to find it, what a 50 mg or 100 mg vial costs, its legal status, and why it is not a growth hormone.
- BPC-157 in Canada: what's sold and how to check itBPC-157 is sold in Canada as a research chemical. What it is and isn't (not a steroid, not a GLP-1), the wolverine stack, and how to tell a tested vial.
- DSIP (delta sleep-inducing peptide) handling guideDSIP's numbers in one place: the nine-residue sequence, mass, where the name came from, vial sizes, concentration table and what its report should show.
- Gonadorelin peptide: handling, salt forms and GnRH pulsingGonadorelin is synthetic GnRH, the ten-residue native sequence. Mass, salt forms, why pulsing matters in research, concentration and what its report shows.
- BPC-157 reconstitution, storage and the lab reportThe numbers for BPC-157 in one place: sequence, mass, vial sizes, concentration at common volumes, and what its lab report should show.
- Epitalon reconstitution, storage and lab report guideEpitalon's numbers in one place: the four-residue sequence, its mass, the vial size, concentration table and the amidated analog.
- GHK-Cu: reconstitution, the colour check and storageGHK-Cu's numbers in one place: the copper complex, its mass, the 50 mg vial, concentration table and the colour check you can do yourself.
- Ipamorelin reconstitution and storageIpamorelin's numbers in one place: the selective pentapeptide, its mass, vial size, concentration table and what its report should show.
- KPV peptide reconstitution, storage and lab reportKPV's numbers in one place: three amino acids at 353 g/mol, the vial size, concentration table and what its report should show.
- MOTS-c reconstitution and storageMOTS-c's numbers in one place: the mitochondrial-derived 16-residue peptide, its mass, vial size, concentration table and what its report should show.
- Retatrutide reconstitution and storageRetatrutide's numbers in one place: mass, the three receptors it targets, six vial sizes, concentration table and what its report should show.
- Semaglutide reconstitution: the numbers for the benchSemaglutide's numbers in one place: mass, the C18 chain that extends its half-life, vial sizes, concentration table and what its report should show.
- TB-500 reconstitution, storage and lab report guideTB-500's numbers in one place: mass, its relationship to thymosin beta-4, vial size, concentration table and what its report should show.
- Tirzepatide reconstitution, vial sizes and storageTirzepatide's numbers in one place: mass, receptors, the six vial sizes we sell, concentration at common volumes and what its report should show.