Handling, dosing & storage
A plainspoken primer on reconstituting, dosing, and storing research peptides. Cold-chain hygiene and accurate dosing are the two highest-leverage things a self-researcher can get right.
October 2026
01Step-by-step injection
Subcutaneous injection is the most common route for research peptides. Done cleanly it is low-risk; done sloppily it causes site infections, miscalculated doses, and degraded product.
- 01
Prepare the workspace
Wash hands. Wipe a clean surface with isopropyl alcohol. Lay out: vial, BAC water (or sterile water), syringe, alcohol swabs, sharps container.
- 02
Reconstitute the lyophilized peptide
Draw the calculated volume of BAC water and inject slowly down the inside wall of the vial — do not squirt directly onto the powder. Swirl gently. Never shake.
- 03
Calculate dose volume
Dose (µg) ÷ concentration (µg / unit on a U-100 insulin syringe) = units to draw. Most protocols use 0.5–1.0 mL of BAC water per mg of peptide to make the math clean.
- 04
Draw the dose
Wipe the vial stopper with alcohol. Pull back the plunger to the dose volume, insert needle, push air in, invert and withdraw the dose. Tap out bubbles.
- 05
Inject subcutaneously
Pinch a fold of skin (abdomen, 2 in from navel, or outer thigh). Insert at 45–90°. Slow push over 3–5 seconds. Withdraw. Apply gentle pressure.
- 06
Dispose & log
Cap and drop the needle directly into a sharps container. Record dose, time, site, and any subjective effects. Rotate sites between sessions.
02Storage by state
Peptides are proteins. Heat, light, and freeze-thaw cycles all degrade them. The single biggest factor in whether a "no-effect" report is real or sourcing-driven is cold-chain handling.
| State | Temperature | Shelf life | Notes |
|---|---|---|---|
| Lyophilized (unreconstituted) | –20 °C ideal, 2–8 °C acceptable, room temp short-term | 12–36 months | Most stable form. Avoid freeze-thaw cycles. |
| Reconstituted | 2–8 °C (refrigerator) | 20–30 days for most peptides | Stability varies — BPC-157 ~30 days, Sermorelin ~14 days. Cold chain matters. |
| In-transit | Insulated + cold packs | ≤ 72 hours | Ambient temps above 25 °C accelerate degradation. Reject shipments arriving warm. |
03Reconstitution math
A 5 mg vial reconstituted with 2 mL of BAC water yields 2.5 mg / mL. On a U-100 insulin syringe, each "unit" (line) holds 0.01 mL, which is 25 µg of peptide. A 250 µg dose is therefore 10 units. Always verify your math twice before drawing.
Round dosing to clean unit counts where possible — 10, 20, 25 — and document the actual volume you drew. It's easy to misread half-units under low light.