WADA 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 2026-07-11. Where a claim depends on a specific study, the study is described rather than over-claimed.
Anti-doping laboratories detect GW501516 and its metabolites using liquid chromatography-tandem mass spectrometry. Urine is the most common matrix, though blood and dried blood spots may also be used in some programs. Detection depends on factors such as dose, timing, metabolism, and the sensitivity of the assay. Published methods describe limits of detection in the low nanogram per milliliter range for related compounds. Exact detection windows are not fixed for all situations and remain an area of ongoing study.
Products sold as cardarine have been found to contain incorrect compounds, variable amounts, or no active ingredient at all. Independent testing is required to verify identity and purity. Common analytical approaches include high-performance liquid chromatography, mass spectrometry, and nuclear magnetic resonance for structural confirmation. These methods can distinguish GW501516 from related PPAR agonists and from unrelated steroids. For regulators and researchers, such verification is central to interpreting both biological results and adverse event reports.
Safety discussions about cardarine frequently cite rodent carcinogenicity findings reported in the 2000s. In those studies, treated animals developed tumors at multiple sites, leading sponsors to discontinue clinical development. The relevance of these findings to humans has not been resolved, but they are a major reason the compound is not approved. Current literature emphasizes uncertainty about long-term effects and the risks of unregulated use. Regulators and health agencies have not established a safe human exposure level.
Cardarine is a synthetic compound also known as GW501516, GW-501516, and sometimes endurobol. It was developed as a selective agonist of peroxisome proliferator-activated receptor delta, a nuclear receptor involved in fatty acid oxidation and energy metabolism. The compound was studied in preclinical models for metabolic and cardiovascular conditions, but it did not become a marketed human medicine. In regulatory and anti-doping contexts, it is treated as a prohibited substance rather than a licensed medicine.
The pharmacological interest in cardarine centers on PPARδ activation and its downstream effects on lipid handling and mitochondrial function. In animal studies, PPARδ agonists have been associated with changes in exercise endurance and fatty acid utilization, though results vary by model and protocol. Human data remain sparse, and the absence of large controlled trials limits conclusions about efficacy. Researchers often describe the compound as a tool for probing PPARδ biology rather than a proven therapeutic agent.
| Property | Value | Notes |
|---|---|---|
| Regulatory status | Prohibited in sport | Listed by WADA as a metabolic modulator. |
| Approved medical use | None in major jurisdictions | Not a registered drug. |
| Common test matrix | Urine | Most anti-doping samples use urine. |
| Typical detection method | LC-MS/MS | Detects parent compound and metabolites. |
| Reference standard storage | -20 °C, desiccated | Typical for analytical standards. |
PPARδ is a nuclear receptor that influences transcription of genes involved in fatty acid oxidation, lipid transport, and energy homeostasis. GW501516 binds and activates this receptor with high selectivity relative to PPARα and PPARγ in laboratory assays. Activation alters expression of target genes in skeletal muscle, liver, and adipose tissue in animal models. The exact clinical consequences of these changes in humans remain incompletely characterized, and observed effects in animals do not establish therapeutic benefit or safety.
Published studies have examined GW501516 in animal models of obesity, insulin resistance, and exercise endurance. Early human trials reportedly ended, and development was discontinued after preclinical findings raised concerns about cancer in some rodent studies. Regulatory agencies have not approved cardarine for any medical use. Its availability through non-pharmaceutical channels raises questions about identity, purity, and legal status that are separate from its laboratory pharmacology. Those questions are often addressed through analytical testing rather than assumptions about product labels.
Cardarine is a common name for the investigational chemical GW501516, also written GW-1516. It was developed as a peroxisome proliferator-activated receptor delta agonist for metabolic conditions such as dyslipidemia. Early research focused on lipid handling and energy use in skeletal muscle and other tissues. The compound was never approved as a medicine. In public discussion, it is often grouped with performance-enhancing substances, although its receptor target differs from that of anabolic steroids or selective androgen receptor modulators. Regulatory and health authorities have issued warnings about its use.
GW501516 acts on PPARδ, a nuclear receptor that helps regulate fatty acid oxidation and energy homeostasis. In animal studies, activation of this receptor was associated with increased endurance and changes in lipid metabolism. Human trials examined effects on blood lipids and other metabolic markers, but the compound did not advance to approval. Rodent studies later reported tumors in multiple tissues at doses used in those experiments. Whether those findings translate to human risk remains uncertain, and the clinical relevance of the animal data is still debated.
=== Other === In perfumery, it is used as a fixative to lower the evaporation rate and improve stability. It is used industrially as a stabilizer to inhibit autopolymerization of organic peroxides. It is used as an antioxidant in biodiesel. Polaroid uses it as a photographic developer in their black and white and Reclaimed Blue films.
Any trauma or lacerations Injection drug use Recent surgery Injury of mucous membranes, including hemorrhoids, rectal fissures Peripheral artery disease Cancer Alcohol use disorder Pregnancy or recent childbirth For unclear reasons, it can also infect healthy individuals without medical history or injury. NSAIDs may increase the rates of necrotizing infections by impairing the body's immune response. NSAIDs inhibit the production of prostaglandins responsible for fever, inflammation, and pain. In theory, it also prevents white blood cells from migrating to infected areas, thus increasing the risk of soft-tissue infections. Skin infections such as abscesses and ulcers can also complicate NF. A small percentage of people can also get NF when bacteria from streptococcal pharyngitis spreads through the blood. For infection of the perineum and genitals (Fournier gangrene), urinary tract infection, renal stones, and Bartholin gland abscess may also be implicated.
=== Pests === Common herbarium pests include: silverfish, book lice (psocids), cigarette or tobacco beetles (Lasioderma), dermestids, drugstore beetles (Stegobium paniceum) A reoccurring threat to the longevity of herbarium specimens is insects, a number of which find dried plants palatable. Historically, various methods have been used to kill insects, which either come in with the plants when they are collected or are in the building where the plants are stored. Pests are commonly treated with two different methods:
28 December Storm Gerrit: Almost 8,000 homes are still without power after blizzards and flooding in Scotland. Three men die after a four by four goes into the River Esk in North Yorkshire. The UK Health Security Agency says that at least 30 cases of E.coli may be linked to cheese brands recalled on Christmas Day. Confidential papers released by the UK government show that former prime minister Tony Blair was keen for an English Premiership football club to move to Belfast, because he felt it would be a "significant breakthrough if Belfast had a football team playing in the English Premier League". Discussions were also held in the 1990s about relocating Wimbledon F.C. to Belfast because Wimbledon needed to move from its Plough Lane stadium as a result of the findings of the Taylor Report into the Hillsborough disaster. It was suggested the club could be renamed Belfast United. 29 December BBC News reports that a person has died in Scotland following an E.coli outbreak linked to cheese. Newly released government documents from 2003 show that then-Prime Minister Tony Blair was presented with measures to tackle immigration that included constructing a detention camp on the Isle of Mull and breaking international law. 2024 New Year Honours: Those recognised include Alexander McCall Smith (KBE), Tim Martin (KBE), Stuart Broad (CBE), Sir Ridley Scott (GBE), Shirley Bassey (CH), Michael Eavis (KBE), Jilly Cooper (DBE), Sajid Javid (KBE), Margaret Beckett (DBE), Mary Earps (MBE), Emilia Clarke (MBE), Millie Bright (OBE) and Leona Lewis (OBE).
if all pair-wise electrostatic and van der Waals interactions must be accounted for explicitly. This computational cost can be reduced by employing electrostatics methods such as particle mesh Ewald summation (
Sources: en.wikipedia.org
Based on the hearings, Congress authorized a budget that allowed the library to more than double its staff, from 42 to 108 persons. Senators Justin Morrill of Vermont and Daniel W. Voorhees of Indiana were particularly helpful in gaining this support. The library also established new administrative units for all aspects of the collection. In its bill, Congress strengthened the role of librarian of Congress: it became responsible for governing the library and making staff appointments. As with presidential Cabinet appointments, the Senate was required to approve presidential appointees to the position. In 1893, Elizabeth Dwyer became the first woman to be appointed to the staff of the library.
Magnesium forms a variety of compounds important to industry and biology, including magnesium carbonate, magnesium chloride, magnesium citrate, magnesium hydroxide (milk of magnesia), magnesium oxide, magnesium sulfate, and magnesium sulfate heptahydrate (Epsom salts). As recently as 2020, magnesium hydride was under investigation as a way to store hydrogen.
The word "parsley" is a merger of Old English petersilie (which is identical to the contemporary German word for parsley: Petersilie) and the Old French peresil. Both of these names are derived from Medieval Latin petrosilium, from Latin petroselinum, which is the latinization of the Greek πετροσέλινον, petroselinon, 'rock-celery', from πέτρα, petra, 'rock, stone' and σέλινον, selinon, 'celery'. Mycenaean Greek se-ri-no, in Linear B, is the earliest attested form of the word selinon.
Acute cutaneous lupus erythematosus Atrophoderma of Pasini and Pierini (dyschromic and atrophic variation of scleroderma, morphea plana atrophica, sclérodermie atrophique d'emblée) Calcinosis–Raynaud phenomenon–esophageal dysmotility–sclerodactyly–telangiectasia syndrome (CREST syndrome) Chilblain lupus erythematosus (chilblain lupus erythematosus of Hutchinson) Childhood dermatomyositis Childhood discoid lupus erythematosus Childhood systemic lupus erythematosus Complement deficiency syndromes Dermatomyositis Ehlers–Danlos syndrome Eosinophilia–myalgia syndrome Frontal linear scleroderma (en coup de sabre, morphea en coup de sabre) Generalized discoid lupus erythematosus Generalized morphea Interstitial granulomatous dermatitis Juvenile rheumatoid arthritis (juvenile idiopathic arthritis, Still's disease) Keloid morphea Linear atrophoderma of Moulin (Moulin atrophoderma linearis) Linear scleroderma Localized discoid lupus erythematosus Localized morphea Lupus erythematosus panniculitis (lupus erythematosus profundus, lupus panniculitis, lupus profundus, subcutaneous lupus erythematosus) Lupus erythematosus–lichen planus overlap syndrome (lichen planus–lupus erythematosus overlap syndrome) Methotrexate-induced papular eruption Mixed connective tissue disease (Sharp's syndrome, undifferentiated connective tissue disease) Morphea profunda Morphea–lichen sclerosus et atrophicus overlap Mouth and genital ulcers with inflamed cartilage syndrome (MAGIC syndrome) Neonatal lupus erythematosus Nephrogenic systemic fibrosis (nephrogenic fibrosing dermopathy) Nicolau–Balus syndrome Nodulosis–arthropathy–osteolysis syndrome Normophosphatemic familial tumoral calcinosis Palisaded neutrophilic and granulomatous dermatitis Pansclerotic morphea Parry–Romberg syndrome (progressive hemifacial atrophy) Progressive systemic sclerosis Relapsing polychondritis (atrophic polychondritis, systemic chondromalacia) Rheumatoid arthritis Rheumatoid nodulosis (accelerated rheumatoid nodulosis) Rheumatoid vasculitis Rowell's syndrome Scleredema adultorum (Bushke disease, scleredema diabeticorum, scleredema adultorum of Buschke, scleredema of Buschke) Silicosis Sjögren's syndrome (Mikulicz disease, Sicca syndrome) Subacute cutaneous lupus erythematosus Systemic lupus erythematosus Toxic oil syndrome Tumid lupus erythematosus (lupus erythematosus tumidus) Tuzun syndrome Verrucous lupus erythematosus (hypertrophic lupus erythematosus) Winchester syndrome
Sources: en.wikipedia.org
Legal status varies by country, but cardarine is not approved as a medicine in major jurisdictions. It is often sold as a research chemical, a category that may not be lawful for human use. Buyers should check local laws and product labels carefully.
Anti-doping laboratories use LC-MS/MS to detect GW501516 and its metabolites, usually in urine. The method can identify the parent compound at low concentrations. Detection windows vary with dose and individual factors.
No, cardarine has no approved medical uses in major jurisdictions. Early research explored metabolic conditions, but those programs were discontinued. It is not a registered treatment for any disease.
Cardarine is an investigational synthetic compound that acts as a PPARδ agonist. It is also known as GW501516 and has been studied mainly in preclinical research. It is not an approved medicine.