title: [Clinical diagnosis and laboratory data].
abstract: Modern medicine can not be practiced without laboratory tests. Laboratory tests play a vital role from the initial stage of clinical examination. The Japanese Society of Clinical Pathology has formed a committee specifically dealing with the effective and economic use of lab tests without missing or duplicating the important tests. As is shown in table 1 in the main text "Essential Laboratory Tests" were initially agreed as those tests a patient should take when visiting a clinic regardless of the complaint. From an early stage, laboratory tests were done simultaneously with history-taking and physical examinations. Then the "Initial Impression" is obtained and "Organ-oriented 1st and 2nd screening tests" and confirmatory tests will be done to make the final diagnosis. To evaluate the validity of the "Essential Laboratory Tests", we performed the tests on 1026 patients who visited our general medicine clinic for the first time. We compared the Initial Impression with or without Essential Laboratory Tests. Cases in which a diagnosis could not be made by history-taking and physical examination were decreased from 17.4% to 8.0% by performing the essential laboratory tests. Diagnoses made without the essential laboratory tests were found to be mistaken in 10.4% and the additional use of the tests was suggested to lead to a more accurate diagnosis. In 110 cases, diseases unrelated to the chief complaints, were discovered. Even for the respiratory tract infection, CRP and WBC count, which were included in the essential laboratory tests, were very informative.
authors.affiliation: Department of Laboratory Medicine, National Defense Medical College, Tokorozawa.
authors.forename: S
authors.initials: S
authors.lastname: Sekiguchi
authors.forename: Y
authors.initials: Y
authors.lastname: Takemura
authors.forename: K
authors.initials: K
authors.lastname: Hayashi
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019411:Clinical Laboratory Techniques; D005260:Female; D006801:Humans; D008297:Male; D008487:Medical History Taking; D008875:Middle Aged; D010808:Physical Examination