Results 251 to 260 of about 6,406,615 (302)

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
openaire   +2 more sources

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.
openaire   +1 more source

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.
openaire   +1 more source

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.
openaire   +1 more source

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
openaire   +1 more source

False-Positive Hemoccult Reaction with Cimetidine

New England Journal of Medicine, 1980
R G, Norfleet, R A, Rhodes, K, Saviage
openaire   +4 more sources

Biologic False-Positive Reaction for Syphilis

New England Journal of Medicine, 1963
ONCE upon a time the physician was hard put to distinguish between the true-positive blood test for syphilis and the biologic false-positive reaction. Only time and exhaustive clinical and epidemiologic studies made a disposition of infection or no infection possible.
openaire   +2 more sources

False-Positive Reactions for Syphilis

Archives of Dermatology, 1968
One-hundred and three probands with chronic false-positive (CFP) seroreactions for syphilis and 199 relatives were studied clinically and serologically. The probands were characterized by an increased incidence of antinuclear-antibodies, rheumatoid factors, hypergammaglobulinemia, and elevated IgM levels.
openaire   +2 more sources

False Positive PPD Reactions

Infection Control, 1985
I, Gurevich, S M, Landry, E H, Hunt, J, Richardson, B, Janelli, B A, Cunha   +5 more
openaire   +2 more sources

The importance of the falsely positive reaction

The Journal of Pediatrics, 1969
F A, Walker, A B, Agarwal, R, Singh
openaire   +2 more sources