Peptide data sheet
CJC-1295
Performance · CJC1295 · Mod GRF 1-29
Verdict
unprovenThe unproven label reflects a real, measurable effect on hormone markers in research paired with an almost complete absence of controlled human trials on the body-composition and performance outcomes people actually want.
By MrPepTalks Editorial
Reviewed for scientific accuracy · research information, not medical advice
Last updated Reviewed
Quick answer
CJC-1295 is a synthetic growth-hormone-releasing-hormone (GHRH) analog commonly researched for its effect on growth-hormone and IGF-1 markers. Early studies suggest it can raise those markers, but controlled human data on real-world outcomes like fat loss or muscle is thin. It is not FDA-approved and is sold for laboratory research use only; reported side effects and gray-market supply risks are covered below.
- Class
- Growth-hormone-releasing hormone (GHRH) analog
- Half-life
- the DAC version is reported to last about 6 to 8 days; the No-DAC form (Mod GRF 1-29) is much shorter, on the order of tens of minutes (reported)
- FDA status
- Not FDA-approved. Sold as a research chemical for laboratory use only; not intended for human use.
- WADA banned?
- Yes
Which form actually works?
CJC-1295 with DAC
Unproven
The long-acting version, engineered to linger far longer than the natural hormone it mimics. People report interest in it for its convenience, but the longer action is also why some researchers flag a more sustained, less physiological signal. Controlled human outcome data remains limited.
CJC-1295 No-DAC (Mod GRF 1-29)
Unproven
The short-acting form, often discussed alongside ipamorelin because their timing is thought to pair well. It is the version people most associate with the popular stack, but that pairing is a community practice, not an outcome established in trials.
Third-Party Testing & Certificate of Analysis (COA)
A certificate of analysis (COA) is a lab document that reports what a specific batch of material actually contains. Reputable research suppliers publish one for every batch, tied to a lot number you can match against the vial you received.
- HPLC — purity
- High-performance liquid chromatography reports purity as a percentage: how much of the sample is the intended compound rather than impurities.
- Mass spectrometry (MS) — identity
- Mass spectrometry confirms identity by measuring the sample's molecular mass, so it matches the peptide the label names.
It also matters who ran the test. In-house results come from the seller's own lab; an independent third-party lab has no stake in the result, so its COA generally carries more weight. Look for a named testing laboratory, a batch or lot number, and a test date that lines up with the vial in hand.
New to reading one? This guide walks through a COA line by line: how to read a peptide COA.
Sources
- Teichman SL et al. Prolonged stimulation of GH and IGF-I secretion by CJC-1295, a long-acting GHRH analog, in healthy adults. J Clin Endocrinol Metab, 2006.
- Ionescu M, Frohman LA. Pulsatile secretion of GH persists during continuous stimulation by CJC-1295, a long-acting GHRH analog. J Clin Endocrinol Metab, 2006.
- World Anti-Doping Agency Prohibited List (growth-hormone secretagogues / GHRH analogs, class S2).
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