>The 7 Laws of Diagnostics

An interesting look at the utility of diagnostic tests in emergency medicine. Click on the link below for a full description of these laws which should be considered by all physicians before ordering tests. Remember this post next time you suggest ‘routine labs’ and a chest x-ray for your work-up.

  • The Zeroth Law: there is no such thing as Zero Risk
  • First Law: All Tests are Imperfect
  • Second Law: Context always trumps the result
  • Third Law: Sutton’s Law OR “Go where the money is!”
  • Fourth Law: There are thresholds for every test for any disease
  • Fifth Law: Senthi’s Law – Prognosticate before you Investigate
  • Sixth Law: Routine Tests return Routine Answers

More detail here

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