The probability of a false positive in a chemical assay for a drug or poison (something appearing to show up when it isn't really there) is reasonably well known.

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Its versatile microarray assay contains over 12, 000 electrodes available for individual assay.

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This can be for assay development, where you need to have the same animal to test drugs and to compare drugs with other people working in other countries.

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Basically, to assess mineral content the geologists drill some holes and assay the ore for potash exploring percentage of mineral content as well as the thickness of the pay zone.

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For example, in their assay group, or their testing group, they have an RVP test, which stands for respiratory viral panel.

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The A1C assay, which has been used for nearly 30 years to determine how well a patient controls diabetes, is a more stable, reliable diagnostic tool than the techniques currently in use, the authors of the report said.

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Geron and GE Healthcare, a division of General Electric, are developing and commercializing cellular assay products derived from human embryonic stem cells for use in drug discovery, development and toxicity screening.

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General Electric ( GE - news - people ), are developing and commercializing cellular assay products derived from human embryonic stem cells for use in drug discovery, development and toxicity screening.

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So Dr Wildt's group is, for example, using a test-tube assay to measure hormone patterns in the faeces of endangered clouded leopards, and correlating these to behaviour under stress with a view to improving reproductive efficiency.

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