Everything below concerns WADA Prohibited List. We keep the language plain, cite what the science says, and separate well-supported claims from open questions.
Last reviewed on 2026-08-01. Where a claim depends on a specific study, the study is described rather than over-claimed.
Because cardarine is not an approved medicine, no pharmacopeial monograph defines its identity, purity, or storage requirements. Laboratories typically rely on in-house methods and reference standards when testing materials labeled as GW501516. Certificates of analysis may report purity and identity for a specific batch, but their scope varies and they do not guarantee safety or legal status. Independent verification can include high-performance liquid chromatography, mass spectrometry, nuclear magnetic resonance, and elemental analysis. The distinction between research chemical labeling and human use is significant because quality standards and oversight differ.
Cardarine can be detected in biological samples and product materials using liquid chromatography coupled to tandem mass spectrometry (LC-MS/MS). The method separates compounds by chromatography and identifies them by mass-to-charge transitions, allowing low-level detection in urine or blood. Sample preparation often involves enzymatic hydrolysis, solid-phase extraction, or protein precipitation. Certified reference materials and isotope-labeled internal standards improve quantification. Detection windows depend on metabolism, matrix, and assay sensitivity, so no single universal window applies.
Regulatory treatment of cardarine differs by context and jurisdiction. In competitive sport, the World Anti-Doping Agency lists PPARδ agonists, including GW501516, as prohibited at all times. Outside sport, it lacks approval as a prescription medicine in major drug markets, and products sold for human consumption may be treated as unapproved drugs. Some countries also restrict importation or sale through general consumer protection and medicines laws. These classifications affect availability, testing, and legal risk without establishing therapeutic value.
A persistent misconception is that cardarine is a fat-burning drug or a safe alternative to anabolic steroids. No approved therapeutic product exists, and human safety data are limited. The tumor findings in rodents remain a central concern in scientific reviews. Products sold online may contain inaccurate labels, impurities, or different compounds entirely, which complicates any assessment of effects. Independent testing of such products has reported frequent mislabeling. For these reasons, discussions in the literature emphasize risks and unknowns rather than benefits.
Cardarine is not approved for human therapeutic use in any major jurisdiction. It appears on the World Anti-Doping Agency Prohibited List as a PPARδ agonist within the hormone and metabolic modulators category. Sports organizations test for it because it has been detected in athlete samples and seized products. Regulatory actions against marketed research chemical versions have occurred in several countries, though enforcement varies. Availability through unregulated channels complicates oversight.
Analytical laboratories typically identify cardarine and its metabolites using liquid chromatography-tandem mass spectrometry. Urine is a common matrix in anti-doping testing, while blood and tissue may be used in research settings. Detection windows depend on the assay, the sample matrix, and the compound's metabolism. Because cardarine is extensively metabolized, laboratories often target specific metabolites to improve sensitivity and confirmation. Reference standards are required for reliable quantification. Method validation includes checks for selectivity, linearity, and carryover.
| Property | Value | Notes |
|---|---|---|
| WADA classification | S4 Hormone and Metabolic Modulators | Prohibited at all times in sport. |
| Drug approval status | Not approved in major jurisdictions | No accepted therapeutic indication. |
| Common detection method | LC-MS/MS | Detects parent compound and metabolites. |
| Typical test matrix | Urine or blood | Urine is common in anti-doping testing. |
| Product labeling | Research chemical or supplement | Often not independently verified. |
Clinical development stopped after rodent studies showed tumors at multiple sites. Whether those findings predict human cancer risk remains an open question, but they led sponsors to discontinue programs. Human safety data are limited to small, short-term studies that were not designed to assess cancer risk. Reported effects in those studies included changes in blood lipids, but the evidence is insufficient for medical use. Long-term consequences of nonmedical use are not well characterized. Questions about dose, duration, and individual susceptibility remain unresolved.
Cardarine is a common name for GW501516, an investigational compound developed in the 1990s for metabolic conditions. It acts as an agonist at peroxisome proliferator-activated receptor delta, a nuclear receptor involved in lipid and energy metabolism. The compound is frequently mislabeled as a selective androgen receptor modulator, or SARM, but its molecular target is different. GW501516 reached early clinical testing before development was discontinued. It has no approved therapeutic use in any country. The name cardarine is not a formal international nonproprietary name.
Regulatory treatment varies, but cardarine is not approved as a medicine. Sports authorities list GW501516 as a prohibited substance, and it is banned at all times under the World Anti-Doping Agency code. Many countries restrict sales for human consumption, while online vendors market it as a research chemical. Such products may lack purity data, and their actual contents can differ from the label. Purchasing or possessing cardarine may carry legal consequences depending on jurisdiction. The compound is not a dietary supplement ingredient in regulated markets.
Human trials of GW501516 were small and short in duration. They examined lipid levels, glucose handling, and other metabolic markers, but the programs were halted after the animal cancer findings. No approved therapeutic product exists, and published human data are insufficient for establishing long-term safety. Reports of use for athletic performance come mainly from non-clinical settings and cannot be verified through controlled trials. Independent testing of products sold as cardarine has found inconsistent purity and labeling.
Laboratory studies indicate that GW501516 activates PPARδ, a nuclear receptor involved in fatty acid oxidation and energy metabolism. In rodent experiments, treated animals often showed increased endurance and reduced fat mass. These effects were observed under controlled conditions and do not establish safe or effective use in humans. The exact dose-response relationship in humans remains poorly characterized. Species differences in metabolism can affect how results translate across animals and people.
Safety concerns emerged from long-term animal studies. In rodents given the compound for extended periods, researchers found an increased incidence of certain cancers, including liver and bladder tumors. These findings contributed to the discontinuation of clinical development. Whether similar risks apply to short-term or low-level exposure in humans is not established, and controlled human safety data are limited. The relevance of high-dose rodent carcinogenicity findings to human use remains a subject of debate.
Stability of GW501516 depends on form, temperature, light exposure, and moisture. Solid reference material is typically stored frozen or refrigerated in a desiccator and protected from light. Solutions in organic solvents such as dimethyl sulfoxide are often kept frozen in aliquots to reduce freeze-thaw cycling. Aqueous solubility is low, so aqueous stock solutions can be difficult to prepare without cosolvents. Degradation may appear as changes in chromatographic purity or mass spectral signal. Stability studies are needed to establish shelf life for any specific preparation.
Quality assessment for cardarine samples usually combines identity, purity, and impurity testing. Nuclear magnetic resonance spectroscopy and mass spectrometry can confirm molecular structure, while high-performance liquid chromatography estimates purity. Certificates of analysis from testing laboratories may list these results, but they do not establish safety or legality. In the absence of approved manufacturing, products sold online may contain the wrong compound, variable amounts, or unlisted contaminants. Independent verification is therefore central to analytical work and to interpreting any reported biological activity.
Laboratory detection of GW501516 commonly uses liquid chromatography coupled with tandem mass spectrometry. The method can identify the parent compound or its metabolites in urine and blood after sample cleanup. Protein precipitation, solid-phase extraction, or enzymatic hydrolysis may precede analysis, depending on the matrix. Reference standards are required for accurate quantification and confirmation. Because the compound is not approved, testing often occurs in anti-doping, forensic, or research settings rather than routine clinical care. Results are reported with limits of detection and quantification.
== Availability == Ketazolam is not approved for sale in Norway, Australia, United Kingdom or the United States. In South Africa, GlaxoSmithKline markets ketazolam under its Solatran brand name. In Canada, ketazolam is listed in schedule IV of the Controlled Drugs and Substances Act, along with other benzodiazepines.
=== Advancing women in academia === Masur aims to advance and increase the visibility of women in STEMM. She uses her voice to create opportunities for women in science and fights for more equitable academic space. During her tenure at Mount Sinai, Masur was the first Dean of Faculty Developmencreating mentorship opportunities for women and men . She is a member of the Office of Gender Equity as Director of the Office for Women's Careers, which evolved from the Women Faculty Group at Mount Sinai (established in 1986). As the Director of the Office of Women's Careers, she advocates for women at ISMMS. Targeted programs and monthly events are hosted for women to discuss juggling career with family and to provides them with mentorship and leadership opportunities. Masur has published works describing the development of Women in Cell Biology (WICB) as well as anticipations of the future of women in STEMM. Masur held leadership roles including Chair of Diversity Issues Committee on Women and Minorities for the Association for Research in Vision and Ophthalmology from 1997 to 1999, co-director of the National Eye Institute's "Fundamental Issues in Vision Research" at the Marine Biological Laboratory from 2001 to 2010, and Chair of Women in Cell Biology for the American Society of Cell Biology from 2010 to 2016. In 2015 the American Society for Cell Biology honored Masur by naming one of their leadership awards the "Sandra K. Masur Senior Leadership Award" for efforts in scientific leadership and her long history of creating opportunities for women.
==== Challenges ==== Cell culture using droplet-based microfluidics has created many opportunities for research that is inaccessible in conventional platforms, but also has many challenges. Some of the challenges of cell culture in droplet-based microfluidics are common to other microfluidic culture system. First, nutrient consumption should be re-evaluated for a specific microfluid system. For example, glucose consumption is sometimes increased in microfluidic systems (depending on the cell type). The medium turnover is sometimes faster than in macroscopic culture due to reduced culture volumes, thus the volumes of the medium used must be adjusted in each cell line and device. Secondly, the cellular proliferation and behavior may differ depending on the microfluidic systems, a determining factor is the culture surface area to media volume, which vary from one device to another. One report found that proliferation was impaired in the microchannels; increased glucose or serum supplementation did not address the problem for his specific case. Thirdly, the pH regulation must be controlled. PDMS is more permeable to CO2 than to O2 or N2, thus, the dissolved gas level during incubation should be adjusted to reach the expected pH condition.
== Reactions == The cycle comprises three enzyme-catalysed reactions. The first stage is the deamination of the purine nucleotide adenosine monophosphate (AMP) to form inosine monophosphate (IMP), catalysed by the enzyme AMP deaminase:
==== 8 April ==== The Gulf states, including Kuwait, the United Arab Emirates, Bahrain, Iraq and Saudi Arabia reported intercepting missiles throughout the day, with a fire starting in Abu Dhabi’s Habshan gas complex and on an important Saudi pipeline being directly hit by a drone. Since 8 a.m. Arabia Standard Time (UTC+03:00), Kuwait faced 28 Iranian drone attacks and the UAE had faced 35 drone attacks, causing extensive damage. Later in the day, Qatar also confirmed they had intercepted seven missiles and drones. Iranian state television confirmed the attacks, reporting they were carried out in response to the bombing of Iranian oil facilities. Iranian-allied groups in Iraq hit a diplomatic support centre at the Baghdad International Airport during the ceasefire, prompting the US embassy to warn its citizens in the region against further possible attacks and to avoid air travel.
Sources: en.wikipedia.org
About 55% of blood is blood plasma, a fluid that is the blood's liquid medium, which by itself is straw-yellow in color. The total blood plasma volume in an average human is 2.7–3.0 liters (2.8–3.2 quarts). It is essentially an aqueous solution containing 92% water, 8% blood plasma proteins, and trace amounts of other materials. Plasma circulates dissolved nutrients, such as glucose, amino acids, and fatty acids (dissolved in the blood or bound to plasma proteins), and removes waste products, such as carbon dioxide, urea, and lactic acid. Other important components include:
In December 2024, research commissioned by the UK recycling charity Material Focus estimated that 13 vapes were being thrown away every second in the UK, amounting to over a million per day, and that approximately 8.2 million vapes a week were discarded or recycled incorrectly, with growth linked to larger "big puff" devices. Research led by University College London and the University of Oxford reported that lithium-ion cells inside some disposable vapes can retain high capacity after hundreds of charge-discharge cycles, underscoring resource waste and the importance of proper collection and recycling of embedded batteries. Recycling challenges, waste issues, and fire hazards are cited. Concerns about youth vaping are also raised. The UK Vaping Industry Association defends disposables as quitting aids and warns of potential black market products if banned. Although some brands have begun recycling services for their e-cigarette cartridges and batteries, the prevalence of recycling is unknown. A 2024 UK study reported that only a minority of surveyed retailers provided recycling points despite existing legal obligations, and estimated that more than 250 million disposable vapes could be discarded before regulatory restrictions came into force. Several jurisdictions subsequently moved to restrict or ban single-use (disposable) vapes while allowing reusable products, citing environmental and waste concerns. In Australia, imports of disposable vapes were prohibited from 1 January 2024 under new import controls.
Various attempts have been made to express the "quality" or "value" of various kinds of protein. Measures include the biological value, net protein utilization, protein efficiency ratio, protein digestibility corrected amino acid score and the complete proteins concept. These concepts are important in the livestock industry, because the relative lack of one or more of the essential amino acids in animal feeds would have a limiting effect on growth and thus on feed conversion ratio. Thus, various feedstuffs may be fed in combination to increase net protein utilization, or a supplement of an individual amino acid (methionine, lysine, threonine, or tryptophan) can be added to the feed.
Australia contributed a Naval Task Group, which formed part of the multi-national fleet in the Persian Gulf and Gulf of Oman, under Operation Damask. Medical teams were deployed aboard a US hospital ship, and a naval clearance diving team took part in de-mining Kuwait's port facilities following the end of combat operations. Australian forces experienced a number of incidents in the first number of weeks of the Desert Storm Campaign including the detection of significant air threats from Iraq as a part of the outer perimeter of Battle Force Zulu; the detection of free sea floating mines and assistance to the aircraft carrier USS Midway. The Australian Task Force was also placed at great risk with regard to the sea mine threat, with HMAS Brisbane narrowly avoiding a mine. The Australians played a significant role in enforcing the sanctions put in place against Iraq following Kuwait's invasion. Following the war's end, Australia deployed a medical unit on Operation Habitat to northern Iraq as part of Operation Provide Comfort.
=== Ga–Go === Elmer L. Gaden (1923–2012). American biochemical engineer at the University of Virginia, known as the father of biochemical engineering. Michael H. Gelb (b. 1957). American biochemist at the University of Washington who studies study enzymatic processes of biomedical significance. Susan Gerbi, (b. 1944). American biochemist at Brown University working on RNA and DNA. Jonathan Gershenzon (b. 1955). American biochemist at the Max Planck Institute for Chemical Ecology in Jena, known for work on the biochemistry of secondary plant metabolites. Quentin Gibson FRS (1918–2011). British-American biochemist at Sheffield and later Cornell University who worked on haem proteins. Member Natl. Acad. Sci. USA. Walter Gilbert FRS (foreign member) (b. 1932). American biochemist at Harvard, awarded the Nobel Prize in Chemistry (1980) for work on DNA sequencing. Member Natl. Acad. Sci. USA. H. Bentley Glass (1906–2005). American biochemist at the State University of New York at Stony Brook. Member Natl. Acad. Sci. USA Joseph L. Goldstein (b. 1940). American biochemist at the University of Texas, awarded the Nobel Prize in Physiology or Medicine (1985) for studies of cholesterol. Member Natl. Acad. Sci. USA. Eugene Goldwasser (1922–2010). American biochemist at the University of Chicago, known for identifying the hormone erythropoietin. Michael M. Gottesman (b. 1946). American biochemist at the NIH, whose achievements includes the discovery of P-glycoprotein. Member Natl. Acad. Sci. USA. Alfred Gottschalk (1894–1973).
Sources: en.wikipedia.org
A moment was a medieval unit of time. The movement of a shadow on a sundial covered 40 moments in a solar hour. An hour in this case meant one twelfth of the period between sunrise and sunset. The length of a solar hour depended on the length of the day, which in turn varied with the season, so the length of a moment in modern seconds was not fixed, but on average, a moment corresponded to 90 seconds.
CIDP is a neurological disorder caused by an injury to the protective coating of the nerves as they leave the brain. However, this was almost immediately ruled out by his physicians as testing was already done against the possibility of CIDP. Leaving the paralysis to be a rare side effect of the clinical drug, Ibrutinib Joe was taking to control his blood cancer, only he hasn't been taking the medication since a blood clot almost killed him. Dr. Lisa Sanders suggests that his regaining feeling in his toes is a result of Joe being off the medication, as it could take up to a year for the medication to fully leave his body and for the nerves to rebuild themselves. This raises the issue that if Joe stays off the medication he might be able to walk again but if he doesn't get back on he will have nothing controlling his blood cancer. Dr. Lisa Sanders later published Ann’s story on the column and awaited the response from the audience. The audience presented with many possibilities but Ann’s doctors had tested and ruled them all out except for two. The first possibility is Lyme Disease which is an infection caused by bacteria transmitted through ticks. While Ann’s symptoms are not in line with that of Lyme Disease, the disease is known for causing all kinds of strange and interesting neurological problems. The second possibility is that Ann has a Functional Neurological Disorder, where simply her body is not transmitting the correct signals.
The Centre Party, whose pragmatic principles generally left it open to supporting either a monarchical or republican form of government, proved one of the mainstays of the Weimar Republic, continuing the cooperation with SPD and DDP in the Weimar Coalition. This combination, however, lost its majority in the 1920 elections. The formation of the new Christian People's Party in Rhineland (May 1920) caused considerable concern among the Centre leadership. Seeing the exodus of conservative Catholics caused by a sharp left turn of the Centre at the end of war, Adam Stegerwald proposed his "Essen program" (September 1920) that promised Germany to become "Christian, democratic, German, and social" and a plan to form a broad-based Christian party. The party was an ideologically diverse coalition of Catholic politicians, comprising republicans like Matthias Erzberger and Joseph Wirth as well as right-wingers like Franz von Papen. As a result of the party's flexibility, it participated in every government between 1919 and 1932, both with parties to their left and to their right. The Centre mainly provided the ministers for finance and labour and, on four occasions, the Chancellor. However, this also damaged the party's prospects because it was increasingly associated with all of the conflicts, problems, and failures of the Republic.
Abiogenesis – Life arising from non-living matter Brine pool – Accumulation of brine in a seafloor depression Endeavour Hydrothermal Vents – Group of Pacific Ocean hydrothermal vents Extremophiles – Organisms capable of living in extreme environmentsPages displaying short descriptions of redirect targets Hydrogen sulfide chemosynthesis - system of generating energy used in hydrothermal vents Lost City Hydrothermal Field Magic Mountain (British Columbia) – Hydrothermal vent field in the northeast Pacific 9° North – Region of hydrothermal vents on the East Pacific Rise in the Pacific Ocean Pito Seamount – Seamount in the Pacific Ocean north-northwest of Easter Island Submarine volcano – Underwater vents or fissures in the Earth's surface from which magma can erupt Volcanogenic massive sulfide ore deposit, also known as VMS deposit – Metal sulfide ore deposit Deep sea mining
Small humanin-like peptides (SHLPs) are a group of peptides encoded in the 16S ribosomal RNA region of mitochondrial genome. Six peptides of this group (SHLP1–6) have been identified so far, between 20-38 amino acids in length. They are derived from the mitochondria and act as important retrograde signaling molecules in the cell. Their names were given because the SHLPs share some similar biological effects with the mitochondrial peptide Humanin. Every individual SHLP showed unique expression pattern in mouse tissues. Specifically, SHLP1 was detected in the heart, kidney, and spleen; SHLP2 was detected in the liver, kidney, and muscle; SHLP3 was detected in the brain and spleen; SHLP4 was detected in the liver and prostate; and SHLP6 was detected in the liver and kidney. Experiments using cultured mammalian cells have shown that SHLPs are bioactive peptides. Incubation of each synthetic SHLP with cells affected cell viability, proliferation and apoptosis differentially, which suggests that every SHLP may play a different role in the biological system.
Sources: en.wikipedia.org
Anti-doping laboratories typically use LC-MS/MS to detect GW501516 and its metabolites in urine. The method is sensitive and can identify the compound at low concentrations. Detection depends on sample timing, metabolism, and the specific assay.
Legality varies by country and context. It lacks marketing approval as a medicine in major countries. Sports organizations prohibit its use at all times.
A certificate of analysis may report identity, purity, and testing methods for a specific batch. It does not guarantee safety or legal status. Independent verification can confirm whether the material matches the label.
No. Cardarine has not received approval for human therapeutic use in major jurisdictions. It remains an investigational compound.