hGH fragment comes up often in conversation and rarely with the context attached. Here we lay out the basics in order, then work through the practical considerations.
Last reviewed on 2025-12-30. Where a claim depends on a specific study, the study is described rather than over-claimed.
Detection and characterization of AOD-9604 in research and anti-doping settings typically rely on mass spectrometry coupled with liquid chromatography. These methods can identify the peptide by its mass and fragmentation pattern. Immunoassays may also be used in some screening contexts, but they can cross-react with related peptides. Because the molecule is small and may be present at low concentrations, sample preparation and method validation are important. Confirmatory analysis usually requires comparison with a certified reference standard.
In laboratory settings, AOD-9604 is commonly supplied as a lyophilized powder and stored cold to limit degradation. Reconstituted solutions are typically kept refrigerated or frozen, depending on the buffer and concentration, and protected from repeated freeze-thaw cycles. Stability can be influenced by pH, temperature, and the presence of proteases. Purity is usually assessed by high-performance liquid chromatography and mass spectrometry. These practices support reproducibility, but they do not imply safety or efficacy for any human use.
Regulatory status: AOD-9604 is not approved as a therapeutic drug in the United States, European Union, or other major markets. It is listed by the World Anti-Doping Agency as a prohibited substance in sport, specifically under growth hormone fragments. Many jurisdictions restrict its sale for human consumption. Products marketed online may not meet pharmaceutical quality standards. The legal status varies by country and often depends on whether the material is presented as a research chemical, supplement, or drug.
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.
Laboratory studies have reported that AOD9604 can increase lipolysis and reduce lipid accumulation in fat cells. The precise molecular target remains uncertain, and the compound does not appear to activate the growth hormone receptor in the same way as full-length hGH. Proposed mechanisms include effects on beta-adrenergic signaling and enzymes involved in fatty acid synthesis, but these pathways are not firmly established. Because most evidence comes from cell and animal models, whether the same effects occur in humans is an open question.
| Property | Value | Notes |
|---|---|---|
| Regulatory status | Not approved as a medicine | Status varies by country; prohibited in sport. |
| Common storage temperature | 2–8 °C for lyophilized powder | Protect from light and moisture; follow supplier instructions. |
| Typical analytical method | LC-MS/MS | Used for identification and quantification in biological samples. |
| Purity assessment | HPLC and mass spectrometry | Reverse-phase HPLC is common for peptide purity. |
| Common synonyms | AOD9604; hGH 176-191 fragment | Naming conventions differ across studies. |
Researchers have studied the fragment in cell and animal models to understand its metabolic actions. Some experiments report effects on fat breakdown and fat storage pathways, but the underlying mechanism remains incompletely defined. AOD-9604 does not appear to stimulate the same broad growth hormone receptor signaling as full-length hGH. Whether its observed activities arise from direct receptor interactions or downstream metabolic changes is an open question. Results from different assays are not always consistent.
AOD-9604 is a synthetic peptide modeled on the C-terminal region of human growth hormone. It corresponds to residues 176-191 of the 191-amino-acid hGH sequence. The fragment is not the full hormone and lacks the receptor-binding region associated with growth and metabolic effects of hGH. Researchers developed it to isolate a specific portion of hGH for study. Its exact sequence and length are often stated in peptide catalogs and patents.
Early interest in AOD-9604 centered on whether a fragment of human growth hormone could influence fat metabolism without the broader effects of the full hormone. Cell and animal studies reported changes in fat storage and breakdown. Human trials followed, but the results were not strong enough to secure regulatory approval. The compound remains available for laboratory research, and its clinical potential is still described as uncertain. Studies continue to examine its activity and safety profile.
AOD-9604 is a synthetic peptide that corresponds to a short section of human growth hormone. It is commonly identified as hGH fragment 176-191 because its sequence matches residues at the C-terminal end of the hormone. The molecule contains sixteen amino acids and is made by solid-phase peptide synthesis. Researchers study it for metabolic effects rather than for the growth-promoting actions associated with full human growth hormone. Its small size distinguishes it from the complete 191-amino-acid hormone.
Several names appear in scientific and commercial settings. AOD9604 and AOD-9604 are development codes used interchangeably, while hGH fragment 176-191 describes the same region. The peptide includes a disulfide bond between two cysteine residues, which helps shape its three-dimensional structure. Different suppliers may provide acetate or other salt forms, and purity can vary. These differences matter because analytical tests and biological assays can respond to the specific form being studied.
=== MDP-apatite or dentin interactions === The adhesive interaction of MDP with synthetic hydroxyapatite was observed using x-ray photoelectron spectroscopy and atomic absorption spectrophotometry. MDP readily adhered to hydroxyapatite and this bond appeared very stable, as confirmed by the low dissolution rate of its calcium salt in water. MDP, which effectively interacts chemically with hydroxyapatite and the calcium salt of which is hardly soluble, showed no signs of degradation in bond strength. Micro-tensile bond strength (μTBS) to dentin of a self-etch adhesive that contains MDP were measured up to 100,000 thermocycles. The μTBS of the MDP-based adhesive to dentin after 100,000 thermocycles was not significantly different from that of the control. Experimental primers, which were prepared by three different purity grade MDP monomers, were tested. Impurities and the presence of MDP dimer affected not only hybridization, but also reduced the formation of MDP_Ca salts and nano-layering. MDP in a high purity grade is essential to achieve durable bonding.
Significant controversy surrounds female genital mutilation, with the World Health Organization (WHO) and other health organizations campaigning against the procedures on behalf of human rights, stating that it is "a violation of the human rights of girls and women" and "reflects deep-rooted inequality between the sexes". Female genital mutilation has existed at one point or another in almost all human civilizations, most commonly to exert control over the sexual behavior, including masturbation, of girls and women. It is carried out in several countries, especially in Africa, and to a lesser extent in other parts of the Middle East and Southeast Asia, on girls from a few days old to mid-adolescent, often to reduce sexual desire in an effort to preserve vaginal virginity. Comfort Momoh stated it may be that female genital mutilation was "practiced in ancient Egypt as a sign of distinction among the aristocracy"; there are reports that traces of infibulation are on Egyptian mummies. Custom and tradition are the most frequently cited reasons for the practice of female genital mutilation. Some cultures believe that female genital mutilation is part of a girl's initiation into adulthood and that not performing it can disrupt social and political cohesion. In these societies, a girl is often not considered an adult unless she has undergone the procedure.
Isotope masses from: M. Wang; G. Audi; A. H. Wapstra; F. G. Kondev; M. MacCormick; X. Xu; et al. (2012). "The AME2012 atomic mass evaluation (II). Tables, graphs and references" (PDF). Chinese Physics C. 36 (12): 1603–2014. Bibcode:2012ChPhC..36....3M. doi:10.1088/1674-1137/36/12/003. hdl:11858/00-001M-0000-0010-23E8-5. S2CID 250839471. Archived from the original (PDF) on 2013-09-28. Retrieved 2013-07-03. Audi, Georges; Bersillon, Olivier; Blachot, Jean; Wapstra, Aaldert Hendrik (2003), "The NUBASE evaluation of nuclear and decay properties", Nuclear Physics A, 729: 3–128, Bibcode:2003NuPhA.729....3A, doi:10.1016/j.nuclphysa.2003.11.001 Half-life, spin, and isomer data selected from the following sources. Audi, Georges; Bersillon, Olivier; Blachot, Jean; Wapstra, Aaldert Hendrik (2003), "The NUBASE evaluation of nuclear and decay properties", Nuclear Physics A, 729: 3–128, Bibcode:2003NuPhA.729....3A, doi:10.1016/j.nuclphysa.2003.11.001 National Nuclear Data Center. "NuDat 3.0 database". Brookhaven National Laboratory. Holden, Norman E. (2004). "11. Table of the Isotopes". In Lide, David R. (ed.). CRC Handbook of Chemistry and Physics (85th ed.). Boca Raton, Florida: CRC Press. ISBN 978-0-8493-0485-9.
AI can be used to create sexually explicit images and videos featuring unconsenting individuals, most often celebrities. 404 Media reported the existence of a Telegram bot for generating AI videos that has a monthly audience of over 100,000 users. In 2025, the Chinese technology company Alibaba released a video generation model called Wan 2.1, which was subsequently modified to remove guardrails, allowing generation of suggestive content.
A study on Neanderthal teeth from the Chagyrskaya Cave in the Altai Mountains (Russia), indicating that the studied sample overall falls within the known Neanderthal phenotypic variability but also preserves specific morphological traits, is published by Gicqueau et al. (2026). Massilani et al. (2026) present a high-quality genome of an approximately 110,000-years-old Neanderthal individual from the Denisova Cave (Russia), providing evidence of a closer relationship of the studied individual to a 120,000-years-old Neanderthal from the same cave than to a 80,000-years-old individual from the Chagyrskaya Cave or to European Neanderthals, evidence of gene flow from Denisovans in both Neanderthals from the Denisova Cave, and evidence of differentiation between Altai and European Neanderthals comparable to that of the most differentiated populations of modern humans. Zubova et al. (2026) report evidence of deliberate invasive dental caries intervention in a 59,000-years-old Neanderthal molar from the Chagyrskaya Cave. Evidence from the study of rhinocerotid remains from Middle Paleolithic sites in France and Spain, interpreted as consistent with use of rhinoceros teeth as tools (including soft hammers and anvils) by Neanderthals, is presented by Sanz-Royo et al. (2026). Picin et al.
Sources: en.wikipedia.org
== Diagnosis == Mitochondrial diseases are usually detected by analysing muscle samples, where the presence of these organelles is higher. The most common tests for the detection of these diseases are:
== Medical uses == Dezocine is generally administered intravenously (as Dalgan) to relieve post-operative pain in patients. It can also be administered in intramuscular doses, and is given once rather than continuously. It is often administered in post-operative laparoscopy patients as an alternative to fentanyl. Dezocine has potent analgesic effects, and comparable or greater pain-relieving ability than morphine, codeine, and pethidine (meperidine). It is a more effective analgesic than pentazocine, but causes relatively more respiratory depression. Dezocine is a useful drug for the treatment of pain, but side effects such as dizziness limit its clinical application, and it can produce opioid withdrawal syndrome in patients already dependent on other opioids. Because of its high efficacy, dezocine is often administered at a base dose of 0.1 mg/kg. Respiratory depression, a side effect of dezocine, reaches a ceiling at 0.3 to 0.4 mg/kg.
=== Switzerland === In the Romandy, a moitié-moitié (lit. half-half) can refer to coffee mixed with an equal amount of milk.. In the German-speaking part of Switzerland, especially in the north-eastern part, a mixture of apple and orange juice is known as "halb halb" ("half half", sometimes written 1+1).
==== Reaction with compounds containing active methylene groups ==== In the presence of alkoxides, reactions of ethylene oxide with compounds containing active methylene group leads to the formation of butyrolactones:
Naftali Loewenthal, member of the Chabad Hasidic community; main area of study is Hasidism and Jewish Mysticism; professor in the Department of Hebrew and Jewish Studies at University College London; director of the Chabad Research Unit, a division of the Chabad-Lubavitch movement in United Kingdom; author of Communicating the Infinite: The Emergence of the Habad School (1990); also authored Hasidism Beyond Modernity: Essays in Habad Thought and History (2019) as well as many scholarly articles and publications on the Chabad mysticism; also extensively written on history of Chabad Hasidic women. Nick Lowles, founder of Hope Not Hate and former editor of the anti-fascist Searchlight (magazine), backed by various politicians and celebrities several trade unions. Knowles is the author of a number of books on football violence, right wing groups and antisemitism in Britain. He was a freelance investigative journalist, working in television, including on BBC Panorama, World in Action, Channel Four Dispatches and MacIntyre Undercover. Moshé Machover (Hebrew: משה מחובר; born 1936) is a mathematician, philosopher, pro Palestinian socialist anti-Zionist activist and author, noted for his writings critical of Israel and Zionism. David Magarshack (23 December 1899 – 26 October 1977); author, translator and biographer of Russian authors, best remembered for his translations of Dostoevsky, Chekhov and Nikolai Gogol; of Russian Jewish ancestry. Miriam Margolyes (born 18 May 1941) is a British and Australian actress.
Sources: en.wikipedia.org
Pilonidal cysts can be itchy and often very painful, and typically occur between the ages of 15 and 35. Although usually found near the coccyx, the condition can also affect the navel, armpit, the cheek, or the genital region, though these locations are much rarer. Signs and symptoms may include:
A matricellular protein is a dynamically expressed non-structural protein that is present in the extracellular matrix (ECM). Rather than serving as stable structural elements in the ECM, these proteins are rapidly turned over and have regulatory roles. They characteristically contain binding sites for ECM structural proteins and cell surface receptors, and may sequester and modulate activities of specific growth factors. Examples of matricellular proteins include the CCN family of proteins (also known as CCN intercellular signaling protein), fibulins, osteopontin, periostin, SPARC family members, tenascin(s), and thrombospondins. Many of these proteins have important functions in wound healing and tissue repair.
In earlier manuscript versions, the figure is surrounded by numbers and phrases which indicate where in the accompanying treatise a healer might find a particular helpful procedure. For instance, in a German Wound Man now in the Wellcome Library, London (MS 49), the spider crawling up the man's thigh is labelled "Wo eine spynne gesticht, 20" ("When a spider bites, 20"), directing the reader to paragraph 20 of the book for an appropriate cure. Similarly, written along the large spear piercing the figure's left side and penetrating into his stomach is the legend "So der gross viscus wund wirt, 14" ("If the large intestine is injured, 14"). Turning to the corresponding cure number 14, the reader finds:
== Taxonomy == Carl Linnaeus described the species in 1771, the specific epithet biloba derived from the Latin bis, "twice" and loba, "lobed", referring to the shape of the leaves. Two names for the species recognise the botanist Richard Salisbury, a placement by Nelson as Pterophyllus salisburiensis and the earlier Salisburia adiantifolia proposed by James Edward Smith. The epithet of the latter may have been intended to denote a characteristic resembling Adiantum, the genus of maidenhair ferns. The generic name Ginkgo can be traced to recordings done by Engelbert Kaempfer, the first Westerner to investigate the species in 1690 in Nagasaki, for the Amoenitates Exoticae (1712): it is regarded as a mistranscription of Japanese 銀杏 ginkyō ([ɡiŋkʲoː]). Taking his spelling of other Japanese words containing the syllable [kʲoː] (present romanization: kyō) into account, an expected transcription would have been "ginkio" or "ginkjo". Thus, his curious "–kgo" spelling has long been considered to be an error Kaempfer made in his notes, but Nagata et al. showed that it was the spelling of his interpreter, Genemon Imamura, who spoke the local Nagasaki dialect. Linnaeus adopted the ginkgo spelling based on Kaempfer's compilation of Japanese flora in Amoenitates while writing Mantissa plantarum II (Amoenitates Exoticae, p. 811) thus becoming the tree's generic name. Kaempfer's drawing can be found in Hori's article.
=== Non-medical === Modafinil has been used non-medically as a "smart drug" by various groups, including students, office workers, and transhumanists. The reported effect ranges from a significant increase in cognitive abilities to a mild or absent improvement. In some cases, it has been associated with impairments in certain cognitive functions. It has been shown that a positive impact on cognitive abilities is more noticeable on sleep-deprived individuals. Therefore, in people who are not sleep-deprived, the potential of modafinil as a cognitive enhancer may be limited.
Sources: en.wikipedia.org
No major regulatory agency has approved AOD-9604 as a medicine. It is treated as an experimental peptide in research settings. Some countries restrict its sale or import.
The World Anti-Doping Agency classifies growth hormone fragments, including AOD-9604, as prohibited substances. The classification reflects concern about potential performance-enhancing use. Athletes are subject to testing for such peptides.
Detection typically uses liquid chromatography combined with mass spectrometry. These methods separate the peptide and identify it by mass. Immunoassays may screen samples but require confirmation by a more specific technique.
AOD9604 is a synthetic peptide based on a C-terminal segment of human growth hormone. It is manufactured by chemical peptide synthesis rather than extracted from human tissue. The sequence is often described as hGH fragment 176–191 or a close variant.