False negative tuberculin tests: check your Heaf gun.
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چکیده
منابع مشابه
False-negative thermonuclease tests with new BacTAlert blood culture bottles.
The Microbiology Unit of Southern Cross Pathology Australia, Monash Medical Centre, has used the Organon Technika BacTAlert automated blood culture instrument since 1995 for the detection of causative organisms of septicemia and bacteremia. When a blood culture bottle is flagged as positive, it is removed from the instrument and subculturing and Gram staining are performed. Gram-positive cocci,...
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BACKGROUND Despite certain drawbacks, the tuberculin skin test (TST) remains in widespread use. Important advantages of the TST are its low cost, simplicity and interpretation based on extensive published literature. However, TST specificity is reduced by bacille Calmette-Guérin (BCG) vaccination and exposure to non-tuberculous mycobacteria (NTM). METHODS To estimate TST specificity, we revie...
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Urine drug screening can detect cases of drug abuse, promote workplace safety, and monitor drugtherapy compliance. Compliance testing is necessary for patients taking controlled drugs. To order and interpret these tests, it is required to know of testing modalities, kinetic of drugs, and different causes of false-positive and false-negative results. Standard immunoassay testing is fast, cheap, ...
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At times, leaping from one patient management routine to an alternative one may be required to mitigate medical errors. "Frozen patient management" is the resultant situation, when, in the face of an obvious gap between the expected and the actual phenomena, leaping from current patient management to an alternative one is not considered or done. Frozen patient management can lead to a significa...
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ژورنال
عنوان ژورنال: BMJ
سال: 1986
ISSN: 0959-8138,1468-5833
DOI: 10.1136/bmj.293.6562.1644-a