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Attention, chocolate lovers: You may not be able to help yourselves. Swiss and British scientists have linked the widespread love of chocolate to a chemical "signature" that may be programmed into our metabolic systems.
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Tox Screen - Toxicology Screen

Results and Values

What do the test results mean?

Normal values for toxicology screens depend on the institution performing the tests. In general, the following values apply:

There should be no illegal drugs in the blood or urine.

There are acceptable levels for over-the-counter medications. These are called therapeutic levels.

There should be no alcohol.

Cigarette smoking may affect some test results.

The presence of nonprescription drugs may show unapproved drug use.

Specific tests can show the drug used.

High alcohol levels may show intoxication.

Commonly abused drugs that may be detected in the urine include:

marijuana, or pot

cocaine

phencyclidine, or PCP

amphetamines

morphine, heroin, and codeine

barbiturates

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