Peptide research, organized

Reconstitution math,
solved in seconds.

Enter your vial, water, and target amount — PepGuru returns the exact draw on your syringe. Then explore dosing references, goal-based guides, and COA-verified suppliers, all in one clean place.

Free forever No signup Works with every peptide
Reconstitution Calculator Live
mg
mL
5 units
on a U-100 insulin syringe
Conc. 5 mg/mL
Draw 0.05 mL
40 doses / vial
Full calculator →
One hub, four tools

Everything you need to research peptides

Skip the scattered forum posts and spreadsheets. PepGuru puts the math, the references, and the sourcing in one place.

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Reconstitution Calculator

Vial size, water, target dose — get exact syringe units instantly. Reverse mode included. Works with any reconstituted peptide.

Open calculator →
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Peptide Library

Browse compounds by research goal with typical concentrations, half-life notes, and reconstitution references.

Explore library →
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Research Guides

Plain-English, source-backed articles on reconstitution, storage, bac water, and handling — no hype.

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COA-Verified Sources

Where to buy research peptides that ship with batch Certificates of Analysis and third-party testing.

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Peptide Library

Browse by research goal

Not sure where to start? Pick a category to see the compounds most studied for it, with reconstitution and concentration references.

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Fat Loss & Metabolic

GLP-1 & metabolic research

Semaglutide · Tirzepatide · Retatrutide · AOD-9604
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Recovery & Repair

Tissue & healing research

BPC-157 · TB-500 · GHK-Cu · KPV

Skin & Collagen

Dermal & anti-aging research

GHK-Cu · BPC-157 · TB-500 · KPV
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Growth & Composition

GH-axis research

CJC-1295 · Ipamorelin · Tesamorelin · Sermorelin
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Cognitive & Nootropic

Neuro research

Semax · Selank
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Research Stacks

Multi-compound references

Wolverine · GLOW · KLOW · CJC/Ipamorelin
Where to buy

Start with a COA-verified source

PepGuru highlights suppliers that make verification easy — batch Certificates of Analysis, third-party testing, and clear sourcing.

✓ Verified supplier

Summit Research Supply

Third-party HPLC-tested research peptides with a Certificate of Analysis on every batch, plus fast, discreet, U.S.-based fulfillment — a verified supplier featured on PepGuru.

Batch COA on every product
Independent third-party purity testing
U.S. fulfillment, discreet shipping
Shop Summit Research Supply →
TestingThird-party
COAPer batch
FulfillmentU.S. based
First orderPEPDOSE
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Research Guides

Learn the fundamentals

Source-backed, no-hype references for handling and reconstituting research peptides correctly.

Guide · 8 min read

How to Reconstitute a Peptide

Step-by-step: bac water, mixing technique, storage, and getting a clean, repeatable draw every time.

Read guide →
Guide · 6 min read

Bacteriostatic Water Explained

What bac water is, why the 0.9% benzyl alcohol matters, how much to use, and where to source it.

Read guide →
Guide · 7 min read

Reading a Peptide COA

How to interpret a Certificate of Analysis — purity, mass spec, and what actually signals quality.

Read guide →
FAQ

Common questions

Is the reconstitution calculator free?

Yes — completely free, no signup, no account. Enter your vial strength, bacteriostatic water volume, and target amount to get the exact syringe draw in units.

What peptides does it work with?

Every reconstituted peptide. The math is universal — the calculator only needs your vial strength, water volume, and target amount, so it works the same for any compound.

How do I convert mg to syringe units?

First find concentration: divide the vial amount (in mcg) by the water volume (in mL). Then divide your target dose by that concentration to get the volume, and multiply by 100 for units on a U-100 syringe. PepGuru does all of this for you instantly.

What is PepGuru?

PepGuru is a peptide research hub combining a free reconstitution calculator, a goal-based peptide library, plain-English research guides, and COA-verified supplier references — built alongside Summit Research Supply.

Is this medical advice?

No. PepGuru is an educational research tool. All content is for informational and laboratory-research purposes only and is not medical advice. Products referenced are sold strictly as research chemicals, not for human or veterinary use.

Get the exact draw in seconds

The free PepGuru reconstitution calculator works with any peptide — no signup required.

Open the calculator →
For laboratory research use only. PepGuru is an educational tool for measurement, dilution, and reference. Products and compounds referenced are sold strictly as research chemicals and are not for human or veterinary use, not drugs, and not intended to diagnose, treat, cure, or prevent any disease. Nothing here is medical advice. Affiliate disclosure: PepGuru features Summit Research Supply as a verified supplier and may earn a commission from purchases made through supplier links on this site.