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  2. Mantoux test - Wikipedia

    en.wikipedia.org/wiki/Mantoux_test

    The results of this test must be interpreted carefully. The person's medical risk factors determine at which increment (5 mm, 10 mm, or 15 mm) of induration the result is considered positive. [12] A positive result indicates TB exposure. 5 mm or more is positive in An HIV-positive person; Persons with recent contacts with a TB patient

  3. Diagnosis of tuberculosis - Wikipedia

    en.wikipedia.org/wiki/Diagnosis_of_tuberculosis

    An induration (palpable raised hardened area of skin) of more than 5–15 mm (depending upon the person's risk factors) to 10 Mantoux units is considered a positive result, indicating TB infection. [citation needed] 5 mm or more is positive in HIV-positive person; Recent contacts of TB case

  4. Tine test - Wikipedia

    en.wikipedia.org/wiki/Tine_test

    The test is then read 48 to 72 hours later by measuring the size of the largest papule or induration. Indications are usually classified as positive, negative, or doubtful. [2] Because it is not possible to control precisely the amount of tuberculin used in the tine test, a positive test should be verified using the Mantoux test. [3]

  5. PostScript Printer Description - Wikipedia

    en.wikipedia.org/wiki/PostScript_Printer_Description

    PostScript Printer Description (PPD) files are created by vendors to describe the entire set of features and capabilities available for their PostScript printers. A PPD also contains the PostScript code (commands) used to invoke features for the print job .

  6. Management of tuberculosis - Wikipedia

    en.wikipedia.org/wiki/Management_of_tuberculosis

    Management of tuberculosis refers to techniques and procedures utilized for treating tuberculosis (TB), or simply a treatment plan for TB. The medical standard for active TB is a short course treatment involving a combination of isoniazid , rifampicin (also known as Rifampin), pyrazinamide , and ethambutol for the first two months.

  7. Positive and negative predictive values - Wikipedia

    en.wikipedia.org/wiki/Positive_and_negative...

    The positive predictive value (PPV), or precision, is defined as = + = where a "true positive" is the event that the test makes a positive prediction, and the subject has a positive result under the gold standard, and a "false positive" is the event that the test makes a positive prediction, and the subject has a negative result under the gold standard.

  8. Acid-fastness - Wikipedia

    en.wikipedia.org/wiki/Acid-fastness

    Mycobacterium tuberculosis (stained red) in tissue (blue).. Acid-fastness is a physical property of certain bacterial and eukaryotic cells, as well as some sub-cellular structures, specifically their resistance to decolorization by acids during laboratory staining procedures.

  9. p-Phenylenediamine - Wikipedia

    en.wikipedia.org/wiki/P-Phenylenediamine

    p-Phenylenediamine (PPD) is an organic compound with the formula C 6 H 4 (NH 2) 2. This derivative of aniline is a white solid, but samples can darken due to air oxidation. [ 1 ] It is mainly used as a component of engineering polymers and composites like kevlar .

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