Peptide Cheat Sheet: Printable Mixing, Units and Storage
Peptide cheat sheet on one printable page: the U-100 units to millilitres key, how much bac water each vial size needs and the strength it makes, and storage times written for tropical heat. There are no dose figures here on purpose. The amount each compound actually has is on the peptide dosage chart.
Sources: openFDA label for U-100 HUMULIN R insulin, the source for 100 units in a millilitre; Live US top 10 for "peptide cheat sheet", read 22 October 2026: the results are dose lists, PDFs or a paid Canva template, and only one is a dose-free units reference; none is built for a hot, humid climate
How to use this sheet
Read it top to bottom when you mix a vial. Three tables answer three questions, and none of them tells you an amount to take.
- Units to mL. What any mark on a U-100 insulin syringe is worth in millilitres.
- Bac water by vial. How much water each vial takes and the strength it leaves in each millilitre.
- Storage in heat. What the labels and the nearest tested data say about keeping a vial in a hot climate.
For the amount behind a compound, see the peptide dosage chart. For one peptide at a time, the peptide reconstitution calculator runs your own numbers.
Sources: openFDA label for U-100 HUMULIN R insulin, the source for 100 units in a millilitre
Units to millilitres on a U-100 syringe
On a U-100 syringe the markings are units, and the full 1 mL barrel equals 100 units. Each unit is a hundredth of a millilitre, fixed and the same for every peptide.
| Units | Millilitres | Units | Millilitres |
|---|---|---|---|
| 2 | 0.02 mL | 30 | 0.3 mL |
| 5 | 0.05 mL | 40 | 0.4 mL |
| 10 | 0.1 mL | 50 | 0.5 mL |
| 15 | 0.15 mL | 60 | 0.6 mL |
| 20 | 0.2 mL | 75 | 0.75 mL |
| 25 | 0.25 mL | 100 | 1 mL |
The barrels sold come in 0.3, 0.5 and 1 mL, holding 30, 50 and 100 units. The insulin syringe units chart shows every mark in full.
Sources: openFDA label for U-100 HUMULIN R insulin, the source for 100 units in a millilitre; openFDA device records that list insulin syringe barrels in 0.3, 0.5 and 1 mL
How much bac water each vial needs
More water makes a weaker mix, so the same milligram sits in more units. Strength equals the vial milligrams shared across the millilitres of water you add. The last column is pure math: the units for each 1 mg of peptide at that strength, not an amount to take.
| Vial | 1 mL | 2 mL | 3 mL |
|---|---|---|---|
| 5 mg | 5 mg/mL; 20 u per 1 mg | 2.5 mg/mL; 40 u per 1 mg | 1.67 mg/mL; 60 u per 1 mg |
| 10 mg | 10 mg/mL; 10 u per 1 mg | 5 mg/mL; 20 u per 1 mg | 3.33 mg/mL; 30 u per 1 mg |
| 20 mg | 20 mg/mL; 5 u per 1 mg | 10 mg/mL; 10 u per 1 mg | 6.67 mg/mL; 15 u per 1 mg |
| 30 mg | 30 mg/mL; 3.3 u per 1 mg | 15 mg/mL; 6.7 u per 1 mg | 10 mg/mL; 10 u per 1 mg |
| 40 mg | 40 mg/mL; 2.5 u per 1 mg | 20 mg/mL; 5 u per 1 mg | 13.33 mg/mL; 7.5 u per 1 mg |
Pick the volume that keeps your own numbers easy to read on the syringe. For any amount other than the 1 mg math point, use the peptide reconstitution calculator.
Sources: openFDA label for U-100 HUMULIN R insulin, the source for 100 units in a millilitre; Bacteriostatic Water for Injection USP label, stored at 20 to 25 C, no discard date set after puncture (via our heat-storage guide)
Storage times for a hot climate
Heat is the hard part in Vietnam. These rows are the label limits and the nearest tested data, copied from our heat-storage guide. Where no peptide study exists, the row says so.
| Item | What the label or data says |
|---|---|
| Bac water, unopened or opened | Store at 20 to 25 C. The label gives no in-use date, so follow the CDC rule for opened multi-dose vials: write the date on it and throw it out after 28 days, unless the maker states a different date. |
| Mixed vial (research peptide) | Nobody has tested how long a mixed research vial keeps its strength. The 28 day number people repeat is taken from an insulin label, not from any peptide test. |
| Ozempic pen | 56 days at 15 to 30 C after first use (approved label). |
| Mounjaro | Up to 21 days total, not above 30 C (approved label). |
| Trulicity | Up to 14 days total, not above 30 C (approved label). |
| Before first use | Keep at 2 to 8 C in a fridge and do not freeze (approved label). |
| Vietnam reality | Ho Chi Minh City sits near a 32 C mean daily high for most of the year, so room temperature here runs at the top of every label window. |
The full detail, with travel and power-cut advice, is in storing peptides in Vietnam heat, and whether the water itself needs a fridge is covered in does bacteriostatic water need refrigerating.
Sources: Storing peptides in Vietnam heat, with the approved pen limits and the insulin in-use data it cites; Bacteriostatic Water for Injection USP label, stored at 20 to 25 C, no discard date set after puncture (via our heat-storage guide); CDC, Preventing Unsafe Injection Practices, citing USP General Chapter 797: date an opened multi-dose vial and discard it within 28 days unless the maker states another date, read 23 October 2026
Common questions
Is there a cheat sheet for peptide reconstitution?+
Yes, this page is one. It shows how much bac water each vial size takes, the strength that makes in milligrams per millilitre, and the U-100 syringe units for each 1 mg of peptide. It carries no dose figures, so pair it with the dosage chart for the amount each compound actually has behind it.
How do I figure out how much peptide I need?+
Work out the strength first, then the volume. Divide the vial milligrams by the water you add to get milligrams per millilitre. Divide your amount by that strength for the millilitres, then multiply by 100 for U-100 units. The bac water table below shows the units for each 1 mg at every vial size, and the reconstitution calculator handles any amount.
Do peptides go bad if not refrigerated?+
A sealed dry vial is more stable than a mixed one, but nobody has tested how long a mixed vial of a research peptide lasts at room temperature. The nearest tested figure is an insulin one, 28 days at up to 30 C, which is not peptide specific. In Vietnam heat the safer habit is to refrigerate a mixed vial and keep it out of direct sun.
Do you need a fridge for peptides?+
The approved pen labels all say to refrigerate at 2 to 8 C before first use and never to freeze. After first use they allow a window at room temperature, from 14 days up to 56 days depending on the product. Bac water itself stores at 20 to 25 C. For a mixed research vial there is no tested limit, so a fridge is the cautious choice.
What should I store my peptides in?+
Keep them in the original glass vial, upright, in the coldest steady part of a fridge, away from the door and away from light. Bac water keeps at room temperature. The storing in Vietnam heat guide covers travel, power cuts and what the pen labels allow in detail.
Sources: openFDA label for U-100 HUMULIN R insulin, the source for 100 units in a millilitre; Storing peptides in Vietnam heat, with the approved pen limits and the insulin in-use data it cites
Related reading
Peptide Dosage Chart
The published dose or status for every compound
Peptide Reconstitution Calculator
Run any vial, water and amount
Insulin Syringe Units Chart
The full unit scale for a U-100 barrel
Storing Peptides in Vietnam Heat
Travel, power cuts and label limits
Janoshik Testing Guide
How to read a lab test report
Bac Water vs Sterile Water
What the preservative changes between the two
Peptides Vietnam made this sheet as a mixing and storage reference, not medical advice. It carries no dose for anyone, and keeping a vial cool does not make any compound safe or approved to use.