Accuracy of a novel urine test, Fujifilm SILVAMP tuberculosis lipoarabinomannan, for the diagnosis of pulmonary tuberculosis in children
An accurate point-of-care test for tuberculosis (TB) in children remains an elusive goal. Recent evaluation of a novel point-of-care urinary lipoarabinomannan test, Fujifilm SILVAMP Tuberculosis Lipoarabinomannan (FujiLAM), in adults living with human immunodeficiency virus (HIV) showed significantl...
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| Hauptverfasser: | , , , , , , , , , , , |
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| Dokumenttyp: | Article (Journal) |
| Sprache: | Englisch |
| Veröffentlicht: |
2021
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| In: |
Clinical infectious diseases
Year: 2021, Jahrgang: 72, Heft: 9, Pages: e280-e288 |
| ISSN: | 1537-6591 |
| DOI: | 10.1093/cid/ciaa1052 |
| Online-Zugang: | Verlag, lizenzpflichtig, Volltext: https://academic.oup.com/cid/article/72/9/e280/5881994 Verlag, lizenzpflichtig, Volltext: https://doi.org/10.1093/cid/ciaa1052 
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| Verfasserangaben: | Mark P Nicol, Samuel G Schumacher, Lesley Workman, Tobias Broger, Cynthia Baard, Margaretha Prins, Lindy Bateman, Elloise du Toit, Judi van Heerden, Rita Szekely, Heather J Zar, and Claudia M Denkinger |
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| 245 | 1 | 0 | |a Accuracy of a novel urine test, Fujifilm SILVAMP tuberculosis lipoarabinomannan, for the diagnosis of pulmonary tuberculosis in children |c Mark P Nicol, Samuel G Schumacher, Lesley Workman, Tobias Broger, Cynthia Baard, Margaretha Prins, Lindy Bateman, Elloise du Toit, Judi van Heerden, Rita Szekely, Heather J Zar, and Claudia M Denkinger |
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| 520 | |a An accurate point-of-care test for tuberculosis (TB) in children remains an elusive goal. Recent evaluation of a novel point-of-care urinary lipoarabinomannan test, Fujifilm SILVAMP Tuberculosis Lipoarabinomannan (FujiLAM), in adults living with human immunodeficiency virus (HIV) showed significantly superior sensitivity than the current Alere Determine Tuberculosis Lipoarabinomannan test (AlereLAM). We therefore compared the accuracy of FujiLAM and AlereLAM in children with suspected TB.Children hospitalized with suspected TB in Cape Town, South Africa, were enrolled (consecutive admissions plus enrichment for a group of children living with HIV and with TB), their urine was collected and biobanked, and their sputum was tested with mycobacterial culture and Xpert MTB/RIF or Xpert MTB/RIF Ultra. Biobanked urine was subsequently batch tested with FujiLAM and AlereLAM. Children were categorized as having microbiologically confirmed TB, unconfirmed TB (clinically diagnosed), or unlikely TB.A total of 204 children were enrolled and had valid results from both index tests, as well as sputum microbiological testing. Compared to a microbiological reference standard, the sensitivity of FujiLAM and AlereLAM was similar (42% and 50%, respectively), but lower than that of Xpert MTB/RIF of sputum (74%). The sensitivity of FujiLAM was higher in children living with HIV (60%) and malnourished children (62%). The specificity of FujiLAM was substantially higher than that of AlereLAM (92% vs 66%, respectively). The specificity of both tests was higher in children 2 years or older (FujiLAM, 96%; AlereLAM, 72%).The high specificity of FujiLAM suggests utility as a “rule-in” test for children with a high pretest probability of TB, including hospitalized children living with HIV or with malnutrition. | ||
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