Multi-Laboratory Evaluation of a Lateral Flow Rapid Test for Detection of Amebic Liver Abscess.

Independent evaluations of XEh Rapid®, an IgG4-based rapid dipstick test, were performed to assess its diagnostic performance to detect amebic liver abscess (ALA) using 405 samples at seven laboratories in four countries. The test showed high diagnostic specificity (97-100%) when tested with samples from healthy individuals (n = 100) and patients with other diseases (n = 151). The diagnostic sensitivity was tested with a total of 154 samples, and the results were variable. It was high in three laboratories (89-94%), and moderate (72%) and low (38%) in two other laboratories. Challenges and issues faced in the evaluation process are discussed. Nevertheless, XEh Rapid is promising to be developed into a point-of-care test in particular for resource-limited settings, and thus merits further confirmation of its diagnostic sensitivity.

Citation

Rahmah Noordin, Muhammad Hafiznur Yunus, Syazwan Saidin, Zeehaida Mohamed, Isabel Fuentes Corripio, José Miguel Rubio, Majid Golkar, Shamilah Hisam, Rogan Lee, Rohela Mahmud. Multi-Laboratory Evaluation of a Lateral Flow Rapid Test for Detection of Amebic Liver Abscess. The American journal of tropical medicine and hygiene. 2020 Dec;103(6):2233-2238

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PMID: 32996457

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