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Presumptive test

In medical and forensic science, a presumptive test is an analysis of a sample which establishes either:

  1. The sample is definitely not a certain substance
  2. The sample probably is the substance.

For example, the Kastle-Meyer test will show that a sample is not blood, or that the sample is probably blood (but it may be one of a range of less common substances). Further chemical testing is required to prove that the substance is blood.

In medicine, a presumptive diagnosis identifies the likely condition a patient has.


This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Presumptive_test". A list of authors is available in Wikipedia.
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