Contaminated currency
Encyclopedia
An urban legend
Urban legend
An urban legend, urban myth, urban tale, or contemporary legend, is a form of modern folklore consisting of stories that may or may not have been believed by their tellers to be true...

 that states most U.S.
United States
The United States of America is a federal constitutional republic comprising fifty states and a federal district...

 banknotes have traces of cocaine
Cocaine
Cocaine is a crystalline tropane alkaloid that is obtained from the leaves of the coca plant. The name comes from "coca" in addition to the alkaloid suffix -ine, forming cocaine. It is a stimulant of the central nervous system, an appetite suppressant, and a topical anesthetic...

 on them, and is in fact accurate. In 1994, the U.S. 9th Circuit Court of Appeals
United States Court of Appeals for the Ninth Circuit
The United States Court of Appeals for the Ninth Circuit is a U.S. federal court with appellate jurisdiction over the district courts in the following districts:* District of Alaska* District of Arizona...

 determined that in Los Angeles, out of every four banknotes, on average more than three are tainted by cocaine or another illicit drug.

Additionally, paper money in other parts of the world show a similar drug contamination, and studies indicate that they might even serve as a vector of disease, though researchers disagree over how easily diseases are transmitted this way.

Several theories have been suggested to explain this contamination beyond the predictable contamination due to handling during drug deals and the use of rolled up notes for snorting
Insufflation (medicine)
Insufflation is the practice of inhaling a substance. Insufflation has limited medical use, but is a common route of administration with many respiratory drugs used to treat conditions in the lungs and paranasal sinus .The technique is common for many recreational drugs and is also used for some...

 drugs. After the initial contamination, the substance is "infected to" other notes in close contact, often stacked together, in enclosed environments common in financial institution
Financial institution
In financial economics, a financial institution is an institution that provides financial services for its clients or members. Probably the most important financial service provided by financial institutions is acting as financial intermediaries...

.

In the United States

In a study reported in Forensic Science International, A.J. Jenkins, at the Office of the Cuyahoga County
Cuyahoga County, Ohio
Cuyahoga County is a county located in the state of Ohio, United States. It is the most populous county in Ohio; as of the 2010 census, the population was 1,280,122. Its county seat is Cleveland. Cuyahoga County is part of Greater Cleveland, a metropolitan area, and Northeast Ohio, a...

 Coroner (Cleveland, OH
Cleveland, Ohio
Cleveland is a city in the U.S. state of Ohio and is the county seat of Cuyahoga County, the most populous county in the state. The city is located in northeastern Ohio on the southern shore of Lake Erie, approximately west of the Pennsylvania border...

), the author reports the analysis of ten randomly collected one-dollar bills
Dollar bill
The dollar bill may refer to banknotes of currencies that are named dollar. Note that some of these currencies may have coins for 1 dollar instead.-See also:*Australian one-dollar note*Withdrawn Canadian banknotes*United States one-dollar bill...

 from five cities, and tested for cocaine
Cocaine
Cocaine is a crystalline tropane alkaloid that is obtained from the leaves of the coca plant. The name comes from "coca" in addition to the alkaloid suffix -ine, forming cocaine. It is a stimulant of the central nervous system, an appetite suppressant, and a topical anesthetic...

, heroin, 6-acetylmorphine (also called "6-AM"), morphine
Morphine
Morphine is a potent opiate analgesic medication and is considered to be the prototypical opioid. It was first isolated in 1804 by Friedrich Sertürner, first distributed by same in 1817, and first commercially sold by Merck in 1827, which at the time was a single small chemists' shop. It was more...

, codeine
Codeine
Codeine or 3-methylmorphine is an opiate used for its analgesic, antitussive, and antidiarrheal properties...

, methamphetamine
Methamphetamine
Methamphetamine is a psychostimulant of the phenethylamine and amphetamine class of psychoactive drugs...

, amphetamine
Amphetamine
Amphetamine or amfetamine is a psychostimulant drug of the phenethylamine class which produces increased wakefulness and focus in association with decreased fatigue and appetite.Brand names of medications that contain, or metabolize into, amphetamine include Adderall, Dexedrine, Dextrostat,...

 and phencyclidine (PCP)
Phencyclidine
Phencyclidine , commonly initialized as PCP and known colloquially as angel dust, is a recreational dissociative drug...

. Bills were then immersed in acetonitrile
Acetonitrile
Acetonitrile is the chemical compound with formula . This colourless liquid is the simplest organic nitrile. It is produced mainly as a byproduct of acrylonitrile manufacture...

 for two hours prior to extraction and subjected to Gas chromatography-mass spectrometry
Gas chromatography-mass spectrometry
Gas chromatography–mass spectrometry is a method that combines the features of gas-liquid chromatography and mass spectrometry to identify different substances within a test sample. Applications of GC-MS include drug detection, fire investigation, environmental analysis, explosives investigation,...

 (GC-MS) analysis. Results demonstrated that "92% of the bills were positive for cocaine with a mean amount of 28.75+/-139.07 micrograms per bill, a median
Median
In probability theory and statistics, a median is described as the numerical value separating the higher half of a sample, a population, or a probability distribution, from the lower half. The median of a finite list of numbers can be found by arranging all the observations from lowest value to...

 of 1.37 μg per bill, and a range of 0.01-922.72 μg per bill. Heroin was detected in seven bills in amounts ranging from 0.03 to 168.5 μg per bill: 6-AM and morphine were detected in three bills; methamphetamine and amphetamine in three and one bills, respectively, and PCP was detected in two bills in amounts of 0.78 and 1.87 μg per bill. Codeine was not detected in any of the one-dollar bills analyzed". The study confirmed that although paper currency was most often contaminated with cocaine, other drugs of abuse may also be detected in bills.

Another study, conducted at Argonne National Laboratory
Argonne National Laboratory
Argonne National Laboratory is the first science and engineering research national laboratory in the United States, receiving this designation on July 1, 1946. It is the largest national laboratory by size and scope in the Midwest...

, found that four out of five dollar bills in Chicago suburbs contain traces of cocaine. Previous studies have found similar contamination rates in other cities. But the Argonne study is the first to demonstrate that if you handle contaminated bills, you won't wind up with drugs on your hands. "It's virtually impossible for cocaine to rub off", Argonne chemist Jack Demirgian said. This estimate of contamination could be as high as 94%, according to Bill and Rich Sones of the Chicago Sun-Times
Chicago Sun-Times
The Chicago Sun-Times is an American daily newspaper published in Chicago, Illinois. It is the flagship paper of the Sun-Times Media Group.-History:The Chicago Sun-Times is the oldest continuously published daily newspaper in the city...

.

This was confirmed by Ronald K. Siegel
Ronald K. Siegel
Ronald Keith Siegel is an American psychiatrist, research professor in the Department of Psychiatry and Biobehavioral Sciences at the University of California, Los Angeles , and the author of several noted studies and books on psychopharmacology, hallucination, and paranoia...

 in his book, Intoxication: Life in Pursuit of Artificial Paradise, who noted the figure as well.

It was uncovered in the Sacramento Bee that while the initial source of the contamination
Contamination
Contamination is the presence of a minor and unwanted constituent in material, physical body, natural environment, at a workplace, etc.-Specifics:"Contamination" also has more specific meanings in science:...

 comes from money used in the Illegal drug trade
Illegal drug trade
The illegal drug trade is a global black market, dedicated to cultivation, manufacture, distribution and sale of those substances which are subject to drug prohibition laws. Most jurisdictions prohibit trade, except under license, of many types of drugs by drug prohibition laws.A UN report said the...

 in circulation, the U.S. Federal Reserve unwittingly spreads the substance to clean currency by mixing the notes together. The Journal of Analytical Toxicology confirms this assessment, noting that counting machines (in addition to simple proximity) are the agents of transfer.

The discovery that cocaine is so prevalent in U.S. banknotes has a legal application that reactions by drug-sniffing dogs is not immediately cause for arrest of persons or confiscation of banknotes. (The drug content is too low for prosecution but not too low to trigger response to drug-sniffing dogs.), though this has been contested legally in a number of U.S. state
U.S. state
A U.S. state is any one of the 50 federated states of the United States of America that share sovereignty with the federal government. Because of this shared sovereignty, an American is a citizen both of the federal entity and of his or her state of domicile. Four states use the official title of...

s as a standard of what constitutes 'unusual' levels of contamination remains to be achieved (see below).

In the United Kingdom

Forensic scientists have said that around 80% of all British banknotes contain traces of drugs. A 1999 study found even higher levels of contamination in the London
London
London is the capital city of :England and the :United Kingdom, the largest metropolitan area in the United Kingdom, and the largest urban zone in the European Union by most measures. Located on the River Thames, London has been a major settlement for two millennia, its history going back to its...

 area; of 500 notes tested, only four had no traces of cocaine. Most of the banknotes showed only low levels of contamination, suggesting they had merely been in contact with contaminated notes, but 4% of the notes in the study showed higher levels, which the researchers suggested was the result of either being handled by people under the influence of cocaine (which is excreted
Excretion
Excretion is the process by which waste products of metabolism and other non-useful materials are eliminated from an organism. This is primarily carried out by the lungs, kidneys and skin. This is in contrast with secretion, where the substance may have specific tasks after leaving the cell...

 in skin oils), or by being used directly to snort the drug.

There are drug levels above which banknotes need to be taken out of circulation, and over £15 million worth of notes are destroyed annually for this reason. The destruction is more often done as a precaution than because the money poses a serious health hazard.

Cocaine is the drug most commonly found on banknotes. Heroin and ecstasy are found less often, though the frequency of ecstasy contamination rose in the years leading up to 2002. Joe Reevy of Mass Spec Analytical, a company which analyses confiscated banknotes for the police, pointed out that heroin and ecstasy degrade more rapidly than cocaine, and that a single note which had been used to snort cocaine could subsequently contaminate many others when placed in a sorting machine, to explain the frequency of cocaine contamination.

Money recovered from police raids on the drugs trade are often heavily contaminated. In one raid in 2002, £465,000 was found which had been stored in a room where heroin was being prepared, and was so heavily contaminated that officers were advised not to touch it without protective equipment, while during Operation Uproar, an investigation into Colombia
Colombia
Colombia, officially the Republic of Colombia , is a unitary constitutional republic comprising thirty-two departments. The country is located in northwestern South America, bordered to the east by Venezuela and Brazil; to the south by Ecuador and Peru; to the north by the Caribbean Sea; to the...

n money laundering
Money laundering
Money laundering is the process of disguising illegal sources of money so that it looks like it came from legal sources. The methods by which money may be laundered are varied and can range in sophistication. Many regulatory and governmental authorities quote estimates each year for the amount...

, $1 million in contaminated banknotes was destroyed after being seized.

Prior studies found that the level of contamination - i.e., the concentration of the contaminants - was different between those notes suspected to be used in the drug trade and those of proximity transfer levels. Subsequent tests have confirmed this determination, and serve as the basis for court cases against drug dealers, since the basic level of drug contamination remains fairly constant throughout the UK, despite factors that might immediately be thought to affect levels, like rural or urban environments, rich or poor or areas with high or low crime rates.

Hepatitis-C contamination

The Contamination of paper money is not limited to simply that of cocaine and other illicit drugs. Health officials in the UK warn that a silent Hepatitis-C epidemic could be brewing. Drug users with hepatitis who share with others the rolled paper note (or straw) used to snort cocaine can facilitate the transfer of the disease to thousands. As drug users are frequently impaired, they can easily fail to notice small traces of blood on these rolled banknotes. This is considered to be of particular concern, as eight out of ten carriers are unaware of their status
Asymptomatic carrier
An asymptomatic carrier is a person or other organism that has contracted an infectious disease, but who displays no symptoms. Although unaffected by the disease themselves, carriers can transmit it to others...

 (as hepatitis can lie dormant for decades), and have little in the way of access to regular healthcare . This higher risk for contracting hepatitis-C has also been noted by the American National Institutes of Health
National Institutes of Health
The National Institutes of Health are an agency of the United States Department of Health and Human Services and are the primary agency of the United States government responsible for biomedical and health-related research. Its science and engineering counterpart is the National Science Foundation...

 (NIH). Without treatment, hepatitis-C can lead to chronic liver disease
Chronic liver disease
Chronic liver disease in the clinical context is a disease process of the liver that involves a process of progressive destruction and regeneration of the liver parenchyma leading to fibrosis and cirrhosis.- Causes :...

.

The British Department of Health
Department of Health (United Kingdom)
The Department of Health is a department of the United Kingdom government with responsibility for government policy for health and social care matters and for the National Health Service in England along with a few elements of the same matters which are not otherwise devolved to the Scottish,...

 estimates that there are over 200,000 people infected with hepatitis C in Britain, but the number might be much higher.
Charles Gore, the chief executive of the Hepatitis C Trust, said: "Estimates show that around 5,000 new cases of hepatitis C are diagnosed every year - but they are mainly through chance. Because so many are undiagnosed we can't tell what kind of problem we are looking at. When 5,000 banknotes were tested in London in 2000, 99% of them had traces of cocaine on them. That tells us that there is potentially a massive problem in diagnosis and people's awareness of how easily hepatitis C can be contracted."

Professor Graham Foster, of St Mary's Hospital, London, said: "Sharing banknotes or straws is a significant risk factor that people need to be more aware of. Although the risk of contracting hepatitis C through snorting is lower than through sharing a needle, it is still there."

Eurozone

Similar contaminations have been found on euro
Euro
The euro is the official currency of the eurozone: 17 of the 27 member states of the European Union. It is also the currency used by the Institutions of the European Union. The eurozone consists of Austria, Belgium, Cyprus, Estonia, Finland, France, Germany, Greece, Ireland, Italy, Luxembourg,...

 banknotes from Ireland
Republic of Ireland
Ireland , described as the Republic of Ireland , is a sovereign state in Europe occupying approximately five-sixths of the island of the same name. Its capital is Dublin. Ireland, which had a population of 4.58 million in 2011, is a constitutional republic governed as a parliamentary democracy,...

, Spain
Spain
Spain , officially the Kingdom of Spain languages]] under the European Charter for Regional or Minority Languages. In each of these, Spain's official name is as follows:;;;;;;), is a country and member state of the European Union located in southwestern Europe on the Iberian Peninsula...

, and Germany
Germany
Germany , officially the Federal Republic of Germany , is a federal parliamentary republic in Europe. The country consists of 16 states while the capital and largest city is Berlin. Germany covers an area of 357,021 km2 and has a largely temperate seasonal climate...

. Additionally, Germany had noted the unusual occurrences of German euros cracking and disintegrating after being withdrawn from ATMs
Automated teller machine
An automated teller machine or automatic teller machine, also known as a Cashpoint , cash machine or sometimes a hole in the wall in British English, is a computerised telecommunications device that provides the clients of a financial institution with access to financial transactions in a public...

, later explained as being caused by the sulfates used in the production of methamphetamine mixing with human sweat to form sulfuric acid
Sulfuric acid
Sulfuric acid is a strong mineral acid with the molecular formula . Its historical name is oil of vitriol. Pure sulfuric acid is a highly corrosive, colorless, viscous liquid. The salts of sulfuric acid are called sulfates...

, which breaks down the paper the euros are printed on. Most of the crystal methamphetamine present in Germany comes from Eastern Europe
Eastern Europe
Eastern Europe is the eastern part of Europe. The term has widely disparate geopolitical, geographical, cultural and socioeconomic readings, which makes it highly context-dependent and even volatile, and there are "almost as many definitions of Eastern Europe as there are scholars of the region"...

, and has a high level of sulfates.

Elsewhere in the world

The longevity of most modern currency has also given rise to various fallacies regarding the transmission of bacteriological agents
Biological agent
A biological agent — also called bio-agent or biological threat agent — is a bacterium, virus, prion, or fungus which may cause infection, allergy, toxicity or otherwise create a hazard to human health. They can be used as a biological weapon in bioterrorism or biological warfare...

 with paper banknotes. SARS cannot be spread via banknote, any more than AIDS
AIDS
Acquired immune deficiency syndrome or acquired immunodeficiency syndrome is a disease of the human immune system caused by the human immunodeficiency virus...

 can - though it bears noting that China’s
China
Chinese civilization may refer to:* China for more general discussion of the country.* Chinese culture* Greater China, the transnational community of ethnic Chinese.* History of China* Sinosphere, the area historically affected by Chinese culture...

 concern in early 2003 that the deadly SARS virus could be spread by banknotes caused that country to automatically sequester surrendered notes for 24 hours (the presumed lifespan of the virus) before releasing them back into circulation.

The levels of contamination and the overall "dirtyness" of bills led Australia
Australia
Australia , officially the Commonwealth of Australia, is a country in the Southern Hemisphere comprising the mainland of the Australian continent, the island of Tasmania, and numerous smaller islands in the Indian and Pacific Oceans. It is the world's sixth-largest country by total area...

 to introduce a plastic currency in 1988. These notes are less prone to contamination due to lack of the fabric that can hold crystalline structures that illicit drugs often take. Australia now prints polymer currency for almost two dozen other countries, including Israel
Israel
The State of Israel is a parliamentary republic located in the Middle East, along the eastern shore of the Mediterranean Sea...

, Malaysia, Mexico
Mexico
The United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...

 and Romania
Romania
Romania is a country located at the crossroads of Central and Southeastern Europe, on the Lower Danube, within and outside the Carpathian arch, bordering on the Black Sea...

, as well as at home.

See also

  • United States dollar
    United States dollar
    The United States dollar , also referred to as the American dollar, is the official currency of the United States of America. It is divided into 100 smaller units called cents or pennies....

  • Cocaine in the United States
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