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ImmuLex™ S. pneumoniae Omni
Streptocococcus (S.) pneumoniae, also known as Pneumococcus, is a major cause of invasive infection, and WHO estimates that approximately 1.6 million people die of severe pneumococcal infections every year.
S. pneumoniae is the leading cause of communityacqured -acquired pneumonia and may be the most important agent in community-acquired pneumonia of unknown etiology. S. pneumoniae infection can lead to bacteremia, meningitis and other invasive infections.
A rapid diagnosis of especially pneumococcal pneumonia and meningitis is important as these infections can normally be treated with penicillin and ampicillin, which is inexpensive, and does not induce antibiotic resistance at the same level as other antibiotics.
Product description
The ImmuLex™ S. pneumoniae Omni kit is a rapid latex agglutination test for detection of S. pneumoniae.
It is a ready-to-use latex test for quick detection of S. pneumoniae directly from a positive blood culture or from a pure culture. A positive reaction is visible to the naked eye within 10 seconds for blood culture and pure culture.
The above illustration shows four reactions. From left to right: Circle 1 and 2 are positive reactions – the first in pure culture, and the second in blood culture. Circle 3 and 4 are negative reactions. Notice that circle 3 reaction shows some granules, but these are not true positive reactions.
The test is developed for clinical microbiological laboratories and reference laboratories. ImmuLex™ S. pneumoniae Omni kit contains a bottle of latex particles coated with pneumococcal antiserum raised in rabbits (0.0975% sodium azide as preservation), a positive and a negative control, and 25 reaction cards. ImmuLex™ S. pneumoniae Omni is provided in a 1 mL vial, which corresponds to approximately 75 tests.
Store at 2-8 °C in a dark place. Expiry date is printed on the package. Do not freeze (if the reagents have accidentally been frozen, they should not be used).
How to use
1. Place a drop of latex reagent and a drop of positive blood culture medium on the circle of the reaction card.
2. Mix and spread within the circle.
3. Read result visually within a maximum 10 seconds (positive = visible agglutination).
Sensitivity & Specificity
When testing the performance of ImmuLex™ S. pneumoniae Omni, it proved a sensitivity of 98 % and a specificity of 96 %.
| ImmuLexTM S. pneumoniae Omni | Positive Blood Culture | Negative Blood Culture |
|---|---|---|
| Sensitivity (n = 186): 98 % | 182 | 4 |
| Specificity (n = 69): 96 % | 3 | 66 |
Product range
| Article number | Product | Number of tests | Packing |
|---|---|---|---|
| 91398 | ImmuLex™ S. pneumoniae Omni kit | 75 | 1 box |
| 53285 | Reaction cards, 200 pcs. | 600 | 1 box |
| 88464 | Reaction cards, 50 pcs. | 150 | 1 box |
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