GHRH peptide reference
CJC-1295: Reconstitution Math & Reference
By Baris Bingor · Last updated
How do you reconstitute CJC-1295?
CJC-1295 reconstitution is arithmetic: divide the vial mass (mg) by the bacteriostatic water added (ml) to get mg/ml. A 2 mg vial with 2 ml BAC water yields 1 mg/ml (1000 mcg/ml) — so a 100 mcg draw is 0.1 ml, or 10 units on a U-100 insulin syringe. Peptly computes this instantly with a visual draw indicator.
What is CJC-1295?
CJC-1295 is a synthetic 30-amino-acid analog of growth hormone-releasing hormone (GHRH 1-29), modified for protease resistance. It exists in two forms — with DAC (long-acting) and without DAC (Modified GRF 1-29, short-acting).
CJC-1295 is a GHRH analog studied in limited clinical and animal research as a growth-hormone secretagogue. It is NOT FDA-approved for human use. (By contrast, the related GHRH analog tesamorelin is FDA-approved.) Peptly is a calculator for research and reference — not medical advice.
The two forms differ mainly in half-life. CJC-1295 WITH DAC carries a linker that binds circulating albumin, extending the half-life to roughly 6–8 days. CJC-1295 WITHOUT DAC (Modified GRF 1-29) lacks the linker and has a half-life near 30 minutes, so research protocols use smaller, more frequent doses. The reconstitution arithmetic is identical for both.
CJC-1295 commonly ships as 2 mg or 5 mg lyophilized powder and is frequently studied alongside ipamorelin. Peptly tracks each as a separate profile so saved reconstitution mixes and the injection log stay clean.
Reconstitution math — reference table
| Vial | BAC water | Concentration | Example dose | U-100 units |
|---|---|---|---|---|
| 2 mg | 1 ml | 2 mg/ml | 100 mcg | 5 units |
| 2 mg | 2 ml | 1 mg/ml | 100 mcg | 10 units |
| 5 mg | 2 ml | 2.5 mg/ml | 100 mcg | 4 units |
| 5 mg | 3 ml | 1.67 mg/ml | 200 mcg | 12 units |
| 5 mg | 5 ml | 1 mg/ml | 200 mcg | 20 units |
Storage and shelf-life
Most research protocols refrigerate reconstituted CJC-1295 at 2–8 °C and use within 2–4 weeks. Lyophilized powder typically stores at −20 °C until reconstitution.
How Peptly handles CJC-1295
- Pre-loaded compound profile — no manual entry of vial mass each time.
- Saved reconstitution mixes — reload any combination in one tap.
- Visual U-100 syringe view — see the draw mark before you pull it.
- Injection log — every shot, site, and cycle stored on-device.
- Smart reminders — schedule-aware notifications with site rotation prompts.
Other peptide references
- BPC-157 reconstitution math — BPC-157 is a synthetic pentadecapeptide — a 15-amino-acid fragment derived from a protective protein originally isolated from human gastric juice.
- TB-500 reconstitution math — TB-500 is a 17-amino-acid synthetic peptide fragment of Thymosin Beta-4, a regulatory peptide naturally present in most mammalian cells.
- Semaglutide reconstitution math — Semaglutide is a 31-amino-acid GLP-1 receptor agonist.
- Tirzepatide reconstitution math — Tirzepatide is a dual GIP/GLP-1 receptor agonist — a 39-amino-acid synthetic peptide.
- Ipamorelin reconstitution math — Ipamorelin is a 5-amino-acid synthetic peptide and a selective growth hormone secretagogue.
- Retatrutide reconstitution math — Retatrutide (LY3437943) is an investigational triple-hormone-receptor agonist — it targets the GLP-1, GIP, AND glucagon receptors.
- Tesamorelin reconstitution math — Tesamorelin is a synthetic 44-amino-acid analog of human growth hormone-releasing hormone (GHRH 1-44), stabilized with a trans-3-hexenoic acid group.
- GHK-Cu reconstitution math — GHK-Cu is a copper complex of the naturally occurring tripeptide glycyl-L-histidyl-L-lysine (Gly-His-Lys), which binds a single copper(II) ion.
Related tools and guides
- Main peptide calculator overview
- Peptide reconstitution math reference
- BAC water calculator
- Step-by-step reconstitution guide
- Peptide storage & refrigeration guide
- Peptide dosage unit reference
- Peptide tracker — injection log
Frequently asked questions
What is the difference between CJC-1295 with DAC and without DAC? +
Both are the same 30-amino-acid GHRH analog; the difference is half-life. With DAC, a linker binds albumin and extends the half-life to roughly 6–8 days. Without DAC (Modified GRF 1-29), the half-life is about 30 minutes. The reconstitution math is identical — concentration = vial mass ÷ BAC water.
What BAC water volume works for a 2 mg CJC-1295 vial? +
A common choice is 2 ml, giving 1 mg/ml — a 100 mcg research draw lands at 10 units on a U-100 syringe, easy to read. Peptly shows the unit count for any vial × water combination live as you adjust the BAC slider.
Can I track CJC-1295 and ipamorelin together in Peptly? +
Yes. They are tracked as separate peptide profiles, each with its own saved reconstitution mixes, so the injection log shows both side by side in the History view.
Why are CJC-1295 unit counts so small? +
Research doses are often in the 100–300 mcg range — far smaller than the milligram doses of peptides like tirzepatide. At 1–2.5 mg/ml that lands in the single-digit-to-teens unit range on a U-100 syringe, where Peptly's visual syringe view is especially helpful.
Is CJC-1295 approved for human use? +
No. CJC-1295 is not FDA-approved for human use; it is studied in limited research settings. Peptly is a calculator and reference tool, not medical advice. Consult a licensed clinician for any health decision.