What blood tests found after CJC-1295
What did the first human test, called Stage 1, find about CJC-1295?
One skin shot raised growth hormone for six days. The next test stopped before it showed whether people's health improved. That missing answer matters to you.
An unrolled scroll of what the medical literature actually says about CJC-1295 — the GHRH analog, the DAC variant, the discontinued clinical program.
What changed in people after CJC-1295?
Researchers gave healthy adults a single injection just beneath the skin. Their growth hormone rose two- to ten-fold for at least six days. Insulin-like growth factor, a liver-made hormone that helps your tissue grow, rose 1.5- to 3-fold. It stayed high through days nine to eleven [01].
CJC-1295 is called a peptide. That means it's a short chain of amino acids, the pieces your body uses to make proteins. It copies your body's message to release growth hormone. Scientists changed the chain at places 2, 8, 15, and 27. Those numbers mark spots in the paper. The changes help the drug resist quick breakdown [02]. The long form includes a part that joins a blood protein named albumin. Albumin carries many substances already found in your blood. Once attached, the drug can remain there for close to three weeks [02][12].
No such binding part is on the short form. Half leaves your blood in about thirty minutes. Studies gave this form more than once a day [13]. When I read a claim about hours or days, I first check the form tested. Neither study tells your doctor what fits you.
The plain fact: these studies tracked blood levels. They didn't show that you'd feel better or gain lasting health.
What are the two forms of CJC-1295 made from?
CJC-1295 copies the first part of your body's message to the growth gland. Amino acids are small pieces your body uses to make proteins. The full message has forty-four amino acids [02]. Scientists changed four spots, numbered 2, 8, 15, and 27 in the paper [02]. Those changes stop your body from cutting the drug apart as fast.
The long form adds one more amino acid, for thirty in all. It also carries a part that attaches to albumin, which carries many materials through your blood [02][12]. The attachment lets the drug remain much longer.
The short form contains those four changes but can't attach to albumin. Papers also call it the short form. Its first 29 amino acids match the long form. A different ending lets your body remove it far sooner.
You can't trust a claim about how long CJC-1295 stays until the paper names the form tested.
What did the first tests in people actually check?
In 2006, one paper described two small studies in healthy adults [01]. These first tests checked blood changes and short-term harm. A microgram is a tiny measure of weight. Adults ages 21 to 61 got one skin shot; for every kilogram a person weighed, researchers used 30 to 250 micrograms, which meant heavier people received a larger total amount. So you can't picture one total without that person's weight.
Growth hormone rose two- to ten-fold for six days or more. In stage 1, the first human testing stage, insulin-like growth factor rose 1.5- to 3-fold. This liver-made hormone helps your tissue grow. It stayed high through days nine to eleven [01]. Half of the drug remained in blood 5.8 to 8.1 days later [01].
Stage 2 is a later test that starts asking whether treatment helps while still watching harm. About 192 adults with HIV and extra fat around their organs enrolled. Planned weekly amounts were 60-240 micrograms per kilogram for twelve weeks [18]. In 2006, one person died from a heart attack. The study doctor blamed heart disease already present, not the drug. No outside medical review of that judgment has been published [07]. Testing didn't restart, and the FDA has never approved CJC-1295 for medical use. In December 2024, U.S. advisers considered whether pharmacies should use CJC-1295 powder to make custom medicine for one patient. They didn't support that use [20].
Here is what bears on you. The studies found blood changes. They never showed how you'd feel or whether you'd stay safe over time.
Where can you read more about each question?
Begin with how CJC-1295 works. You'll see what your growth gland does and why one form stays in blood longer.
The CJC-1295 dosage page lists only amounts used in studies. It also explains CJC-1295 half-life, or how much time passes before half is gone from your blood. Those amounts aren't instructions for you.
The CJC-1295 side effects page covers problems seen in stage 1, the first human tests, and stage 2, the later test. It also lists questions no long study answered.
The page on the two CJC-1295 forms shows why only one form attaches to a blood protein.
For quick answers, use the frequently asked questions. You'll find every paper under references and citations. The history of the studies explains why testing stopped, but it can't say what the drug would do to you.