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  2. Sputum culture - Wikipedia

    en.wikipedia.org/wiki/Sputum_culture

    A sputum culture is a test to detect and identify bacteria [1] or fungi that infect the lungs or breathing passages. Sputum is a thick fluid produced in the lungs and in the adjacent airways. Normally, fresh morning sample is preferred for the bacteriological examination of sputum. [ 2 ]

  3. Sputum - Wikipedia

    en.wikipedia.org/wiki/Sputum

    The best sputum samples contain very little saliva, [2] as saliva contaminates the sample with oral bacteria. This is especially true for samples for laboratory testing in cytology or microbiology. Specimen adequacy is assessed by the laboratory technologists by examining a Gram stain or cytology stain of the sputum.

  4. GeneXpert MTB/RIF - Wikipedia

    en.wikipedia.org/wiki/GeneXpert_MTB/RIF

    In a clinical study conducted the sensitivity of the MTB/RIF test on just 1 sputum sample was 92.2% for culture-positive TB; 98.2% for smear+ and culture-positive cases; and 72.5% for smear-negative, culture-positive cases, with a specificity of 99.2%. Sensitivity and higher specificity were slightly higher when 3 samples were tested. [10]

  5. Mycobacteria growth indicator tube - Wikipedia

    en.wikipedia.org/wiki/Mycobacteria_growth...

    The instrument scans the MGIT every 60 minutes for increased fluorescence. Analysis of the fluorescence is used to determine if the tube is instrument positive; i.e., the test sample contains viable organisms. An instrument-positive tube contains approximately 10 5 to 10 6 colony-forming units per milliliter (CFU/mL).

  6. Medical laboratory - Wikipedia

    en.wikipedia.org/wiki/Medical_laboratory

    Clinical laboratory in a hospital setting showing several automated analysers.. A medical laboratory or clinical laboratory is a laboratory where tests are conducted out on clinical specimens to obtain information about the health of a patient to aid in diagnosis, treatment, and prevention of disease. [1]

  7. Diagnosis of tuberculosis - Wikipedia

    en.wikipedia.org/wiki/Diagnosis_of_tuberculosis

    A complete medical evaluation for tuberculosis (TB) must include a medical history, a physical examination, a chest X-ray and microbiological examination (of sputum or some other appropriate sample). It may also include a tuberculin skin test, other scans and X-rays, surgical biopsy.

  8. Microbiological culture - Wikipedia

    en.wikipedia.org/wiki/Microbiological_culture

    Subsequently, aliquots of the sample are taken to test for the antimicrobial activity of a specific drug or protein (antimicrobial peptides). Liquid cultures of the cyanobacterium Synechococcus PCC 7002. Static liquid cultures may be used as an alternative. These cultures are not shaken, and they provide the microbes with an oxygen gradient. [6]

  9. Nasopharyngeal swab - Wikipedia

    en.wikipedia.org/wiki/Nasopharyngeal_swab

    To collect the sample, the swab is inserted in the nostril and gently moved forward into the nasopharynx, a region of the pharynx that covers the roof of the mouth. [9] The swab is then rotated for a specified period of time to collect secretions, then the swab is removed and placed into a sterile viral transport media , which preserves the ...