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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]
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.
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 ]
The primary equipment used in BAL includes a fiber-optic bronchoscope, sterile collection traps for collecting test specimens, a sterile saline source, a suction device, and suction tubing. [3] Essentially, the saline source is connected to sterile bronchoscope, as is the specimen collection trap, and then suction tubing is connected to the ...
In this instance, Corynebacterium striatum was causing infection in the respiratory tract of patients and detected in sputum samples. [23] Of the 21 cases in the outbreak, there were six associated deaths. [23] Another study of infection by Corynebacterium striatum described a patient who was admitted to hospital for cardiac arrest treatment in ...
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 ...
Burkholderia cepacia complex Scientific classification Domain: Bacteria Phylum: Pseudomonadota Class: Betaproteobacteria Order: Burkholderiales Family: Burkholderiaceae Genus: Burkholderia Species complex: B. cepacia complex Burkholderia cepacia complex (BCC) is a species complex consisting of Burkholderia cepacia and at least 20 different biochemically similar species of Gram-negative ...
Some specimen types also require special treatment, such as immediate mixture with an additive, or storage at a certain temperature. [5] After extraction , all specimen containers must be labeled with at least two of the following identifiers (at the time of collection): patient's name, date of birth, hospital number, test request form number ...