hGH fragment raises a handful of sensible questions. This page answers them in order, starting with the fundamentals and moving to applications.
This page was last updated on 2025-10-06 and is reviewed periodically as new material appears.
The compound has been studied as a potential treatment for obesity and related metabolic conditions. Published trials have examined changes in body weight, fat mass, and safety markers over limited durations. Results have been mixed or modest, and no large-scale outcome trials are established. Regulatory agencies in several countries have not approved it as a therapeutic drug. Some commercial products have been marketed outside regulated pharmaceutical channels, which raises questions about quality and claims.
In the scientific literature, AOD-9604 appears in reviews of growth hormone fragments and in discussions of peptide-based metabolic research. Some sources distinguish it from growth hormone itself, while others group it with compounds marketed for weight management. The evidence base is small compared with approved obesity medications. Questions about long-term efficacy and clinical relevance remain open, and independent replication of key findings is limited. Most published reports are early-stage and exploratory.
Regulatory interest in AOD-9604 increased after high-profile anti-doping cases involving peptide products. In some cases, the substance was supplied under alternative names or in compounded preparations, complicating traceability. Sports tribunals and anti-doping panels have discussed whether the peptide was explicitly banned at the time of use, leading to clarifications by the World Anti-Doping Agency. For consumers and researchers, the legal status can vary by jurisdiction, and products marketed as research chemicals may lack independent quality verification.
AOD-9604 is listed as a prohibited substance in sport by the World Anti-Doping Agency. It falls under the peptide hormones, growth factors, related substances, and mimetics class on the prohibited list. Anti-doping organizations treat its presence in an athlete's sample as an adverse finding unless a therapeutic use exemption applies. The prohibition reflects concerns about performance enhancement in competitive settings and the difficulty of distinguishing exogenous peptide use from endogenous hormone fragments.
Detection of AOD-9604 in biological samples relies on analytical techniques capable of distinguishing a small synthetic peptide from related endogenous sequences. Liquid chromatography coupled with tandem mass spectrometry is commonly used for confirmatory analysis. Sample preparation may involve immunoaffinity enrichment or solid-phase extraction to concentrate the peptide. Because the molecule is small and may be present at low concentrations, assay sensitivity and specificity are ongoing analytical challenges. Laboratories also validate methods against reference materials when available.
| Property | Value | Notes |
|---|---|---|
| Common synonym | hGH fragment 176-191 | Refers to the C-terminal segment |
| Appearance | White to off-white powder | Typically supplied lyophilized |
| Solubility | Soluble in water and aqueous buffers | Confirm with technical data |
| Typical storage temperature | -20 °C for dry powder | Protect from moisture and light |
| Common analytical method | RP-HPLC with UV detection | Often paired with mass spectrometry |
Clinical development of AOD9604 included trials in people with obesity, but the results did not lead to approval as a prescription medicine in major markets. Interest later shifted to research settings and to unapproved products marketed for body composition. Regulatory agencies have questioned whether the peptide qualifies as a dietary ingredient, and some have issued warnings about its presence in supplements. Long-term human safety data are limited, and questions about efficacy, dosing, and target populations remain unresolved.
AOD9604 is a synthetic peptide modeled on the C-terminal region of human growth hormone. It corresponds to a short sequence near the end of the 191-amino-acid hormone, often described as residues 176–191 or a related fragment. Researchers designed it to separate metabolic effects from the growth-promoting actions of full-length growth hormone. Early work in the 1990s explored it as a candidate for weight and lipid disorders. It is not a naturally circulating hormone fragment produced in large amounts.
Clinical development of AOD-9604 included trials in people with obesity. Reports from early-phase and mid-phase studies described modest or inconsistent changes in body weight. A phase IIb program did not meet its primary endpoint, and the compound was not approved for medical use. Differences in formulation, delivery route, and participant characteristics may explain some of the variation. Later investigations explored whether the peptide might have effects in other tissues, including cartilage.
Regulatory treatment of AOD-9604 is shaped by its classification as a peptide hormone. The World Anti-Doping Agency lists it as a prohibited substance, and many national anti-doping organizations adopt that list. It does not hold approval as a prescription medicine in the United States, the European Union, or other major markets. Products sold online are frequently labeled for research use only and may not undergo independent quality testing. Import and possession rules differ by country, so legal status depends on local law.
Proposed mechanisms for AOD-9604 focus on fat cells. Laboratory studies suggest the peptide can increase lipolysis, the breakdown of stored fat, and reduce lipogenesis, the formation of new fat. Unlike full human growth hormone, it does not appear to stimulate substantial IGF-1 production in the studies reported so far. Some evidence points to beta-adrenergic signaling, but the precise receptor targets and downstream pathways remain unresolved. The fragment is not thought to act through the classical growth hormone receptor.
Für das anaplastische Schilddrüsenkarzinom gibt es noch keine Zulassung von einem Tyrosinkinase-Inhibitor. Es wird hier als erste Therapie eine Kombination aus Operation, perkutaner Bestrahlung und Chemotherapie sowie die Aufnahme in Studien empfohlen.
== Prognose == Differenzierte Karzinome Die Heilungschancen bei differenzierten Schilddrüsenkarzinomen sind im Allgemeinen sehr gut. Meist werden durchschnittliche 10-Jahres-Überlebensraten von über 90 % bei der papillären und ca. 80 % bei der follikulären Variante angegeben (bei Behandlung). Als Prognosefaktoren gelten Patientenalter sowie Größe, Ausbreitung und histologische Differenzierung des Tumors; Lymphknotenmetastasen scheinen die Prognose nicht wesentlich zu beeinflussen. Wegen des erhöhten Rezidivrisikos ist eine konsequente Nachsorge äußerst wichtig. Medulläres und anaplastisches Karzinom Folgende 5-Jahres-Überlebensraten gelten durchschnittlich (bei Behandlung):
== Selbsthilfe == Auf Grund der Seltenheit von Schilddrüsenkrebs ist es für Patienten überaus schwer, Betroffene für den Erfahrungsaustausch zu finden, es gibt daher nur wenige lokale Selbsthilfegruppen. Auf deutscher Bundesebene gibt es drei Selbsthilfe-Organisationen (die Schilddrüsen-Liga Deutschland, den Verein Bundesverband Schilddrüsenkrebs und die Selbsthilfegruppe C-Zell-Karzinom), die sich für die Interessen von Schilddrüsenkrebspatienten einsetzen, praktische Informationen geben (zum Beispiel richtige Einnahme von Schilddrüsenhormonen, je nach Tumortyp eventuell jodarme Ernährung vor Radiojodtherapie) und über neue Studien und aktuelle Leitlinien kritisch informieren.
== Literatur == S2k-Leitlinie Operative Therapie maligner Schilddrüsenerkrankungen der Deutsche Gesellschaft für Allgemein- und Viszeralchirurgie e. V. (DGAV). In: AWMF online (Stand 2012) Bryan R. Haugen et al.: 2015 American Thyroid Association Management Guidelines for Adult Patients with Thyroid Nodules and Differentiated Thyroid Cancer. In: Thyroid, Volume 26, Number 1, 2016 Christian Hubold, Hendrik Lehnert: Klassifikation und klinische Diagnostik des Schilddrüsenkarzinoms – Benigner Knoten oder therapierelevantes Karzinom? In: Der Klinikarzt, 41, 2012, S. 458–463, doi:10.1055/s-0032-1330946. Oliver Gimm: Medulläres Schilddrüsenkarzinom – Besonderheiten, Diagnostik, Therapie und Nachsorge. In: Der Klinikarzt, 41, 2012, S. 476–480, doi:10.1055/s-0032-1330949. Alexander Iwen, Hendrik Lehnert, Georg Brabant: Nicht-medulläre Schilddrüsenkarzinome – Neue Strategien und aktuelle medikamentöse Therapiekonzepte. In: Der Klinikarzt, 41, 2012, S. 482–285, doi:10.1055/s-0032-1330950.
Sources: de.wikipedia.org
It is a synthetic peptide fragment derived from the C-terminal region of human growth hormone, commonly referred to as hGH fragment 176-191. It has been investigated for effects on fat metabolism, but it is not an approved medication in most jurisdictions.
No. It is a shortened peptide fragment, not the full hormone. It does not contain the entire hGH sequence and is studied for different proposed effects.
Regulatory approvals for weight loss are not established in major jurisdictions. Some human trials reported modest changes, but the evidence is limited, and it remains a research compound.
Yes, the World Anti-Doping Agency classifies AOD-9604 as a prohibited peptide hormone and related substance. Its use by athletes is banned under the relevant anti-doping code.