03 | the amounts on record
CJC-1295 is a lab-built peptide: a brief string of protein pieces.
This page lists study amounts and timing. No personal plan appears here.
Which dosage amounts did researchers study?
The CJC-1295 dosage record is short. In 2006, Teichman gave healthy adults aged 21-61 one long-lasting CJC-1295 shot just under the skin. Doses were 30, 60, 125, and 250 micrograms for each kilogram a person weighed [1]; each microgram being a millionth of a gram. A second 2006 study used mice born without a gene they need to grow. Each mouse got 2 micrograms per shot, at 24-, 48-, or 72-hour gaps, for five weeks, starting at one week old [3]. In both studies the researchers chose the amounts and kept a close eye on every person or mouse throughout.
Clinics say they give the short form at 100-300 micrograms several times a week, and the long form once a week. That comes from the clinics themselves, not from a trial that compared groups [15]. FDA looked at how pharmacies mix it and how clinics use it in its 2024 papers, and didn't endorse any amount [13].
These figures are what researchers and clinics wrote down. They're not anyone's personal dose, yours included.
Why do the two CJC-1295 forms last so differently?
The long-lasting CJC-1295 form carries a small hook. Within minutes of a shot just under the skin, the hook fastens onto albumin, a protein your blood is full of [1]. From then on the peptide travels with it. Half had left the blood after 5.8-8.1 days; each dose group had its own average, and all fell in that span [1].
The short-lasting form lacks the hook but keeps the swaps at blocks 2, 8, 15, and 27 that slow breakdown [6]. Half of it is gone in about 30 minutes [6]. So the hooked form keeps growth hormone up for days, while the hookless form gives a quick burst that's over within hours [1][6].
FDA hasn't approved either form [13]. Sport's world drug-rules body bans both for athletes [10]. Lasting longer isn't the same as doing you more good.
What changes when CJC-1295 lacks the blood-protein hook?
Without the hook, the short form of CJC-1295 can't latch onto albumin. Papers give it several lab names, and none tells you more than "no hook" does. The swaps at blocks 2, 8, 15, and 27 still make it harder to break down. Half is gone in about 30 minutes, and the body's own unchanged request breaks down even faster [6][7]. So growth hormone comes up in one short burst, much like the body's normal timing.
How long did each CJC-1295 form remain?
The two forms don't linger the same. Among healthy adults, half the long-lasting form had cleared by 5.8-8.1 days. That's a spread of averages: each dose group had its own, and all of them landed in that range [1]. Half the short form cleared in about 30 minutes [6]. Sermorelin, the unchanged copy, lasts 11-12 minutes [7]. The hook makes the big difference, because it lets CJC-1295 ride with albumin in the blood [1].
What was still in blood after one shot?
Blood tests could still find the long-lasting form about two weeks after a single shot. Its ~8-day half-life, the time your body needs to clear half of it, explains that [1]. With repeat shots in Teichman's 2006 study, IGF-1, the liver's answering hormone, stayed above where it began for up to 28 days [1]. The short form was gone within hours, and so was its effect [6]. Stopping the long form doesn't pull back what's already stuck to albumin in your blood. Ask your doctor how a drug that lingers that long could affect side effects or your other medicines.
Where did researchers place the study shots?
Every published human study injected CJC-1295 beneath the skin. Researchers usually used the belly or thigh [1]. Alba's 2006 mouse study used the same route [3]. Some earlier rat work put the compound into the belly. No published study used a pill, nose spray, under-tongue dose, or skin patch. Stomach juices break protein chains of this size apart, so very little would reach the blood [1].
What do published mixing records say—and not say?
CJC-1295 comes to labs as freeze-dried powder. Published records say it was mixed with sterile water holding a preservative, 0.9% benzyl alcohol, which keeps germs from growing. Pharmacy reference books list how much water goes into each vial [13]. How strong the mix ends up depends on both the powder and the water. Kept in the fridge, the mixed liquid stayed usable, meaning it didn't break down, for about 30 days. None of this proves a product safe or suitable for you. Nor is it a set of mixing directions.
Can a blood test stay high after CJC-1295 starts clearing?
Yes. The long-lasting form showed up in blood tests about two weeks after one shot, since its ~8-day half-life means half of it lingers that long [1]. The short form was gone within hours [6]. IGF-1, the liver's answering hormone, is a different matter: on its own, it lasts about 16 hours in blood. IGF-1 can stay raised for a while after the peptide level starts falling [1].
Which CJC-1295 dosage figures came from people?
In 2006, Teichman's healthy adults each got one shot just under the skin: 30, 60, 125, or 250 micrograms, sized to each kilogram of the adult's weight [1]. Clinics later talked about 100-300 micrograms of the hookless form several times a week, and the hooked form weekly. Those are the clinics' own claims; no trial comparing groups has checked them [13]. None of these numbers is a dose for you.
Why does one CJC-1295 form last for days?
The long-lasting form lingers for days, whereas the short form is mostly gone in about 30 minutes [1][6]. The difference is one small hook. It ties the peptide onto albumin, a protein the blood carries in great supply. Tied to albumin, the peptide stays as long as the hook holds [1].
Did any CJC-1295 study use a pill?
No. Researchers injected it just under the skin, usually the belly or thigh in human studies [1]. Alba's 2006 mouse study used the same route [3]. No study here tested a pill. That describes the studies; it isn't advice for you.
Do the CJC-1295 mixing papers prove safety?
No. The papers describe freeze-dried powder mixed with sterile water holding 0.9% benzyl alcohol, a preservative that stops germs growing. Pharmacy books list the water for each vial [13]. The mix's strength depends on the amounts. Nothing here shows a mix is clean or safe, and none of it is for you to follow.