Educational reference only — not medical advice. This calculator does maths only and does not recommend any dose. Always confirm your dose and preparation with a licensed healthcare provider or pharmacist.
Reconstitution Calculator
Results update live as you type. Your dose must come from your prescription or provider — this tool never suggests one.
Printed on the vial label — the total powder in the vial.
The volume of bacteriostatic water you mix into the vial.
Enter the dose exactly as given to you. 1 mg = 1,000 mcg.
U-100 syringes: 100 units = 1 mL, whatever the barrel size.
Nothing you type leaves this page — the calculation runs entirely in your browser. Educational reference only, not medical advice.
CJC-1295 is one of the more confusing peptides to calculate for, and the confusion has nothing to do with the maths. The name covers two different forms, and the vial in your hand could be either. Get the form right, and the arithmetic is the same as any other peptide. This page explains the difference first, then the numbers.
What is CJC-1295?
CJC-1295 is a synthetic analogue of GHRH (growth hormone-releasing hormone), the signal that tells the pituitary gland to release growth hormone. It was developed in the early 2000s by the Canadian company ConjuChem. It comes in two forms:
- With DAC (Drug Affinity Complex): the molecule binds serum albumin and lasts much longer — a half-life of roughly 6–8 days.
- Without DAC: technically called Modified GRF (1-29) or Mod-GRF(1-29), with a half-life of roughly 30 minutes.
It is not approved by the FDA for any use, in any form. Clinical development was largely suspended after a Phase II trial was halted in 2006. In December 2024 the FDA’s compounding advisory committee voted against adding any CJC-1295 form to the 503A bulks list. It is sold as a research compound only, and WADA prohibits it at all times under S2 (GHRH analogues). Tesamorelin, not CJC-1295, is the only FDA-approved GHRH analogue.
The two forms are pharmacologically different and must not be conflated — but the vial maths is identical for both, because concentration depends only on the milligrams on the label and the millilitres of water you add. Note the form on your vial before you calculate.
The vial maths.
With DAC, vials are typically 2 mg and 5 mg (10 mg vials are also sold). Without DAC, vials are typically 2 mg, 5 mg and 10 mg.
Worked example — 2 mg vial, 2 mL of BAC water, example dose 100 mcg:
- Concentration: (2 × 1,000) ÷ 2 = 1,000 mcg/mL
- Each unit holds 1,000 ÷ 100 = 10 mcg
- Units for the example dose: 100 ÷ 10 = 10 units (0.1 mL)
- Doses in the vial: 2,000 ÷ 100 = 20 doses
In 1 mL of water the same vial would be 2,000 mcg/mL and each unit would hold 20 mcg — the water volume always matters as much as the vial size.
Storage (commonly cited):
Unmixed powder frozen at −20 °C for up to 24 months (commonly cited, not a universal verified figure). Once mixed, refrigerate at 2–8 °C, protect from light, do not freeze. Sources commonly cite up to 28 days; some say 4–6 weeks. No published stability study for home-reconstituted CJC-1295 was found, so treat any window as a planning figure.
FAQs
How do I calculate units for a 2 mg CJC-1295 vial?
A 2 mg vial in 2 mL of water gives 2,000 ÷ 2 = 1,000 mcg/mL, so each unit contains 10 mcg. Your units = your dose in mcg ÷ 10. In 1 mL of water the same vial is 2,000 mcg/mL and each unit holds 20 mcg.
Does CJC-1295 with DAC use different maths?
No. DAC changes the molecule’s behaviour, not the arithmetic. Concentration still depends only on the mg printed on the vial and the mL of water you add, and units are still volume × 100 on a U-100 syringe.
How many doses are in one CJC-1295 vial?
Total mcg ÷ your dose in mcg. A 2 mg vial holds 2,000 mcg, so at an example dose of 100 mcg it contains 20 doses.
What about CJC-1295 + ipamorelin blend vials?
Blends are sold co-lyophilised, usually 5 mg + 5 mg in one vial — 10 mg total, never 10 mg of each. Work out each peptide’s share separately; do not treat the total as one peptide’s amount.
Related calculators
See also the Ipamorelin Calculator and the Peptide Calculator home page.
Educational reference only — not medical advice. This calculator does maths only and does not recommend any dose. Always confirm your dose and preparation with a licensed healthcare provider or pharmacist.