Peptide Record

CJC-1295 · Endocrine · graded 2026-07-30

Growth hormone axis

This grade describes how much evidence exists for CJC-1295 against growth hormone axis — not whether it works, and not whether it is safe. It is computed from the inputs below by a fixed rule with no editorial adjustment.

Why this grade

Not hidden behind a control — showing the work is the point
Score decomposition — every input and its contribution
ComponentPointsScale
Best study type
The strongest design that produced evidence for this outcome, not the average design.
+5Human RCT 5 · Human observational 4 · Animal 2 · Preclinical 1 · None 0
Largest human sample
Largest single human study, not a pooled total across studies.
+1n ≥ 200 → 3 · 50–199 → 2 · < 50 → 1 · no human study → 0
Independent replication
Distinct research groups at the best study tier above, resolved through author and institution records.
+1≥ 3 groups → 3 · 2 → 2 · 1 → 1 · 0 → 0
Directional consistency
Share of studies at the best study tier reporting effect in the same direction — the same studies the replication row counts, not every record on the pair.
Measured over 1 stated direction across 3 studies at the best tier. A ratio over three readings and the same ratio over ninety are the same number and are not the same evidence.
0≥ 90% concordant → 3 · ≥ 70% → 2 · ≥ 50% → 1 · below → 0 · fewer than 3 readings → 0
Bias risk
A deduction, never a bonus. A flag is counted only where a record states one; silence is not a pass and is not a flag.
0−1 per flag, floor −3: industry funding · no preregistration · no blinding
Total7Sum of the rows above, floored at 0.
What the bias row had to work with — how many of this pair’s records disclosed each field at all
FieldFlag statedStated the oppositeNot statedSilent
industry_funded
industry-funded deducts a point; declared non-commercial does not; silence does neither.
0018100%
preregistered
not preregistered deducts a point; preregistered does not; silence does neither.
0018100%
blinded
not blinded deducts a point; blinded does not; silence does neither.
0018100%

Grade A additionally requires a total of at least 11 and replication of at least 2: a high score carried by one research group is not replicated evidence, however large the trial.

Doses administered in studies

Sourced figures, not a protocol

Studied doses — not yet collected

Dose, route and n are extracted from study full text, and full text is paywalled for most records in this corpus. No dose has been extracted for this pair yet. Read that as an extraction gap, not as evidence that the studies below administered nothing.

This is a gap in our collection, not a finding about studied doses. Read it as “we have not looked yet”, never as “there is nothing there”. How extraction works and where it fails

Cited sources

18 records · ordered by source hierarchy

These are the records the grade above was computed from — the same set, by the same rule, read from one definition shared with the grader. Records attributed to an alias for a materially different product are not among them; where this pair has any, they are listed separately below.

  • HUMAN-TRIAL3
  • ANIMAL4
  • PRECLINICAL11
SourceStudyDesignnBias flagsDate
HUMAN-TRIALActivation of the GH/IGF-1 axis by CJC-1295, a long-acting GHRH analog, results in serum protein profile changes in normal adult subjects.
PMID 19386527 · DOI 10.1016/j.ghir.2009.03.001 · matched on "CJC1295"
human-observational11none stated2009-12-01
HUMAN-TRIALPulsatile secretion of growth hormone (GH) persists during continuous stimulation by CJC-1295, a long-acting GH-releasing hormone analog.
PMID 17018654 · DOI 10.1210/jc.2006-1702 · matched on "CJC1295"
human-observationalnone stated2006-12-01
HUMAN-TRIALProlonged stimulation of growth hormone (GH) and insulin-like growth factor I secretion by CJC-1295, a long-acting analog of GH-releasing hormone, in healthy adults.
PMID 16352683 · DOI 10.1210/jc.2005-1536 · matched on "CJC1295"
human-rctnone stated2006-03-01
ANIMALA method for confirming CJC-1295 abuse in equine plasma samples by LC-MS/MS.
PMID 30938069 · DOI 10.1002/dta.2599 · matched on "CJC1295"
animalnone stated2019-08-01
ANIMALAn immuno polymerase chain reaction screen for the detection of CJC-1295 and other growth-hormone-releasing hormone analogs in equine plasma.
PMID 30489688 · DOI 10.1002/dta.2554 · matched on "CJC1295"
animalnone stated2019-06-01
ANIMALNeuronal M3 muscarinic acetylcholine receptors are essential for somatotroph proliferation and normal somatic growth.
PMID 19332789 · DOI 10.1073/pnas.0900977106 · matched on "CJC1295"
animalnone stated2009-04-14
ANIMALOnce-daily administration of CJC-1295, a long-acting growth hormone-releasing hormone (GHRH) analog, normalizes growth in the GHRH knockout mouse.
PMID 16822960 · DOI 10.1152/ajpendo.00201.2006 · matched on "CJC1295"
animalnone stated2006-12-01
PRECLINICALAnalysis of growth hormone releasing hormone and its analogs in urine using nano liquid chromatography coupled with quadrupole/orbitrap mass spectrometry.
PMID 41138283 · DOI 10.1016/j.jpba.2025.117207 · matched on "CJC1295"
not determinednone stated2026-01-15
PRECLINICALThe emerging landscape of performance-enhancing peptides modulating GH-IGF1 axis: bridging the gap between clinical evidence and patient self-administration.
PMID 42395176 · DOI 10.3389/fendo.2026.1822475 · matched on "CJC1295"
not determinednone stated2026-01-01
PRECLINICALChromatographic-mass spectrometric analysis of peptidic analytes (2-10 kDa) in doping control urine samples.
PMID 38197510 · DOI 10.1002/jms.4996 · matched on "CJC1295"
not determinednone stated2024-01-01
PRECLINICALAn antibody-free, ultrafiltration-based assay for the detection of growth hormone-releasing hormones in urine at low pg/mL concentrations using nanoLC-HRMS/MS.
PMID 35298973 · DOI 10.1016/j.jpba.2022.114726 · matched on "CJC1295"
not determinednone stated2022-05-30
PRECLINICALAdvances in the detection of growth hormone releasing hormone synthetic analogs.
PMID 34665524 · DOI 10.1002/dta.3183 · matched on "CJC1295"
preclinicalnone stated2021-11-01
PRECLINICALComparison of magnetic bead surface functionalities for the immunopurification of growth hormone-releasing hormones prior to liquid chromatography-high resolution mass spectrometry.
PMID 32971474 · DOI 10.1016/j.chroma.2020.461548 · matched on "CJC1295"
not determinednone stated2020-11-08
PRECLINICALQualitative identification of growth hormone-releasing hormones in human plasma by means of immunoaffinity purification and LC-HRMS/MS.
PMID 26879649 · DOI 10.1007/s00216-016-9377-3 · matched on "CJC1295"
not determinednone stated2016-05-01
PRECLINICALNetnography of Female Use of the Synthetic Growth Hormone CJC-1295: Pulses and Potions.
PMID 26771670 · DOI 10.3109/10826084.2015.1082595 · matched on "CJC1295"
not determinednone stated2016-01-02
PRECLINICALImmunoaffinity purification of peptide hormones prior to liquid chromatography-mass spectrometry in doping controls.
PMID 21871962 · DOI 10.1016/j.ymeth.2011.08.009 · matched on "CJC1295"
not determinednone stated2012-02-01
PRECLINICALIdentification of CJC-1295, a growth-hormone-releasing peptide, in an unknown pharmaceutical preparation.
PMID 21204297 · DOI 10.1002/dta.233 · matched on "CJC1295"
not determinednone stated2010-11-01
PRECLINICALHuman growth hormone-releasing factor (hGRF)1-29-albumin bioconjugates activate the GRF receptor on the anterior pituitary in rats: identification of CJC-1295 as a long-lasting GRF analog.
PMID 15817669 · DOI 10.1210/en.2004-1286 · matched on "CJC1295"
not determinednone stated2005-07-01

Rows are ordered by source hierarchy, so nothing below a regulatory filing appears above a human trial. A field marked uncertain is one where the extraction passes disagreed; it publishes as unknown rather than as a picked winner. A design reading “not determined” is a design nothing established, not a design of none. Explore the full corpus for CJC-1295

Also collected, and not part of this grade

1 record · contributed nothing
SourceStudyDesignnBias flagsDate
PRECLINICALGlycine-modified growth hormone secretagogues identified in seized doping material.
PMID 30136411 · DOI 10.1002/dta.2489 · matched on "Modified GRF (1-29)"
not determinednone stated2019-02-01
CJC-1295 — Growth hormone axis — Peptide Record