Getting started
Most research peptides ship as a freeze-dried powder that has to be dissolved before it can be measured. This page explains what that process is and how it is done sterilely. It is reference information, not a recommendation to use any compound, many listed here are not approved for human use.
The single largest avoidable risk in handling these compounds is not the dose. It is contamination and unverified product. Material sold as a research peptide has no regulated manufacturing standard: what is in the vial may not match the label, may not be the stated purity, and may not be sterile. No procedure below fixes a bad vial. Consult a qualified clinician before making any decision about your health.
What reconstitution means
The vial contains a fixed amount of peptide as a dry powder, measured in milligrams. To draw a precise dose you dissolve it in a known volume of bacteriostatic water, which turns milligrams of powder into a concentration, micrograms per millilitre, that a syringe can measure. How much water you add does not change how much peptide you have; it changes how many syringe units a given dose reads as. That relationship is exactly what the reconstitution calculator computes.
Materials
- Bacteriostatic water
Sterile water containing 0.9% benzyl alcohol, which suppresses microbial growth so a reconstituted vial keeps for weeks refrigerated. Distinct from plain sterile water and from saline; the preservative is the point.
- Insulin syringes (U-100, 29-31 gauge)
The fine gauge and the unit markings are what make small doses measurable. U-100 means 100 units per millilitre, the scale the calculator reports draws in.
- Alcohol prep pads
To wipe the vial stopper before every draw and the skin before injection. Cheap, and the main defence against introducing bacteria.
- A sharps container
Used needles are a biohazard and are not household trash. A rigid sealable container is the minimum.
The procedure
Cold liquid draws sluggishly and can stress the peptide. Take the powder and the bacteriostatic water out a few minutes before starting.
Swab the rubber top of each vial with a fresh alcohol pad and let it dry. Do not touch the stopper after wiping.
Pull the volume the calculator specifies into the syringe. Getting this volume right is what makes every subsequent dose correct.
Angle the needle so the water runs down the inside wall of the vial onto the powder, rather than blasting directly into it. A gentle stream protects the peptide from shear.
Roll the vial gently between your fingers until the powder dissolves. Shaking foams and can denature peptides. Give it a minute; most dissolve on their own.
It should be clear and particle-free. Cloudiness, floating material, or colour is a reason to stop, not to proceed.
Reconstituted peptide goes in the refrigerator, protected from light. Storage times vary by compound. The library entry lists what is known for each.
Two mistakes worth naming
- The ten-fold misread.Insulin syringe units are small and easy to misjudge. Drawing to 100 units when you meant 10 delivers ten times the dose. The calculator’s “check a draw” mode exists precisely to catch this before it matters.
- Confusing mg and mcg. One milligram is one thousand micrograms. A dose entered in the wrong unit is off by a factor of a thousand. When in doubt, the converter settles it.