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A hypothetical ideal "gold standard" test has a sensitivity of 100% concerning the presence of the disease (it identifies all individuals with a well-defined disease process; it does not have any false-negative results) and a specificity of 100% (it does not falsely identify someone with a condition that does not have the condition; it does not have any false-positive results).
The Hierarchy of Occupational Exposure Limits, of which occupational exposure banding is a member. Occupational exposure banding, also known as hazard banding, is a process intended to quickly and accurately assign chemicals into specific categories (bands), each corresponding to a range of exposure concentrations designed to protect worker health.
Omsk hemorrhagic fever is caused by Omsk hemorrhagic fever virus (OHFV), a member of the Flavivirus family. The current species name is Orthoflavivirus omskense [4] according to International Committee on Taxonomy of Viruses taxonomy standards. The virus was discovered by Mikhail Chumakov and his colleagues between 1945 and 1947 in Omsk, Russia.
The test was once part of the World Health Organization (WHO) algorithm for diagnosis of dengue fever, [3] however it is no longer used in the latest WHO guidance. [4] Studies have shown that the tourniquet test has low predictive value for dengue fever and should be used in conjunction with other tests for a reliable diagnosis. [5] [6] [7] [8]
A medical test is a medical procedure performed to detect, diagnose, or monitor diseases, disease processes, susceptibility, or to determine a course of treatment. Medical tests such as, physical and visual exams, diagnostic imaging, genetic testing, chemical and cellular analysis, relating to clinical chemistry and molecular diagnostics, are typically performed in a medical setting.
Another alternative to oligoclonal bands for MS diagnosis is the MRZ-reaction (MRZR), a polyspecific antiviral immune response against the viruses of measles, rubella and zoster found in 1992. [ 22 ] In some reports the MRZR showed a lower sensitivity than OCB (70% vs. 100%), but a higher specificity (92% vs. 69%) for MS. [ 22 ]
Tzanck smear test is useful for rapid diagnosis of mastocytoma in children Sebaceous hyperplasia: Clusters of sebocytes Seborrheic keratosis: Hyperkeratosis and horny cysts 87.5% sensitive and 80.8% specific Melanocytic nevi: Dermal and epidermal type nevoid cells 87.5% sensitive and 100% specific Eruptive vellus hair cysts: Abundant vellus hairs
Bartlett's test is used to test the null hypothesis, H 0 that all k population variances are equal against the alternative that at least two are different. If there are k samples with sizes and sample variances then Bartlett's test statistic is