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Interpretation of Diagnostic Tests.

Nicholas J. Cotsonas Jr, MD
Arch Intern Med. 1971;128(6):994. doi:10.1001/archinte.1971.00310240148022.
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This is truly a handy book (pun intended!). It is a pocket book, but will probably also find its way into the doctor's bag or the glove compartment of his car.

Its obvious advantages are as follows:

  1. the index—45 pages (10% of the book!);

  1. 60 tables—ranging from one showing the normal leukocyte differential count at 12 different points in the first year of life (as well as 11 other points to the age of 21) to seven tables on antibiotics and infections (usual antibiotic susceptibility, microorganisms uniformly sensitive, antibiotic combinations, etc);

  1. its organization—in addition to the usual sections on "Normal Values" and "Specific Laboratory Examinations," there is a 275-page section on "Diseases of Organ Systems." This last section is comprehensive: from listing the times of abnormalities of phase reactants in a disease to "Myocardial Disease Associated with Marked Eosinophilia."

There are a few errors, eg, showing the


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The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
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