Results 251 to 260 of about 207,927 (306)

The Frequency and Identification of False Positive Conversion Reactions

The Journal of Nervous and Mental Disease, 1979
The frequency with which conversion reaction diagnoses are inappropriately applied to persons with physical diseases was estimated in a sample of medical hospital patients diagnosed hysteric. This was accomplished by ratings based on file information available at the time of diagnosis and at a 10-year follow"up, and a count of patients whose ...
C G, Watson, C, Buranen
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Biologic False-Positive Reactions for Syphilis

JAMA: The Journal of the American Medical Association, 1968
To the Editor:— The problem posed ( 203 :996, 1968) regarding a 54-year-old housewife with a reactive fluorescent Treponemal antibody test merits an expanded discussion particularly of the possibility of a biologic false-positive (BFP) reaction. Syphilis is the great mimic, and we of the Osler tradition recall, "When it comes to syphilis, suspect your
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STUDIES ON SIGNIFICANCE OF BIOLOGIC FALSE-POSITIVE REACTION

Journal of the American Medical Association, 1957
• The Treponema pallidum immobilization test, a specific means of diagnosing the biologic false-positive reactor, will separate syphilitic from nonsyphilitic patients, within minor limitations. However, the diagnosis of biologic false-positive reactor raises significant questions concerning the patient.
J L, MILLER, M, BRODEY, J H, HILL
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FALSE POSITIVE REACTIONS TO THE SCHICK TEST

Journal of the American Medical Association, 1950
It has been known almost since active diphtheria immunization was begun that systemic reactions to diphtheria inoculations were more common among adults than among children. Since 1928 the Moloney test1has made it possible to detect many of these potential reactors.
P, COHEN, H, SCHNECK, E, DUBOW
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FALSE POSITIVE SCHICK REACTIONS

Journal of the American Medical Association, 1950
To the Editor:— In their article on false positive reactions to the Schick test (J. A. M. A. 142 :390 [Feb. 11] 1950) Cohen, Schneck and Dubow reported that comparison of results of Schick tests with circulating diphtheria antitoxin in 114 young women revealed 51 of 52 specimens of blood from Schicknegative subjects contained more than 0.01 unit of ...
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BIOLOGICAL FALSE-POSITIVE REACTIONS

Archives of Dermatology, 1966
To the Editor: In their recent article, Kwittken and Goldberg (Arch Derm93:177, 1966) considered their patient's weakly reactive venereal disease research laboratory test for syphilis (VDRL) and complement fixation tests to be biologic false-positive (BFP) reactions.
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False-Positive Reactions for Porphobilinogen

JAMA, 1966
FOR MANY YEARS a positive test for porphobilinogen in urine as described by Watson and Schwartz in 1941 1 was accepted as diagnostic of acute intermittent porphyria. This concept was strengthened by 1,000 routine urinalyses by Hammond and Welker 2 in which no false-positive reactions were found.
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FALSE-POSITIVE REACTION FOR ACETONURIA

Journal of the American Medical Association, 1959
ABSTRACT To the Editor:— While testing, with phenolsulfonphthalein (PSP), the renal function of a patient with well-regulated diabetes mellitus, a strongly positive reaction for acetonuria was noted. This false-positive reaction was noted with the conventional test for acetone, using sodium nitroprusside, as well as with Acetest tablets (Ames Co.) and ...
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False Positive Reactions in PCR

1991
The polymerase chain reaction (PCR) is a recently developed powerful method with many applications in molecular biology and medical diagnostics. The exquisite sensitivity of PCR is its power, but also its weakness. Even the smallest amount of contaminating DNA can be amplified, resulting in misleading or ambiguous results.
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FALSE POSITIVE SEROLOGIC REACTIONS FOR SYPHILIS

Journal of the American Medical Association, 1941
In the past few years there has been a renewal of interest in false positive serologic reactions. Partly because of the increased number of tests performed as a routine on apparently nonsyphilitic persons, there is a better realization of the number of causes of false positive reactions.
FRANCIS W. LYNCH, RUTH E. BOYNTON, ANNE C. KIMBALL   +2 more
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