Is there a bump in your bill? Here's how the DEA tested money for cocaine — and why they stopped

Don't try this at home: method relies on chloroform
Written by Michael Morisy

In response to requests for assisting in tracing drugs, the DEA lab developed a method for detecting traces of cocaine as small as .25mg.

How the DEA tests money for cocaine

So what's the problem with this method? A study of Chicago Federal Reserve Bank cash found a third of randomly selected money samples of $50 and $100 bills in general circulation failed the test. Ultimately, the DEA recommended "the project be terminated."

Here are the full docs:

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Image via FBI.