NS1 antigen test

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NS1 antigen test (NS1 stands for nonstructural protein 1), full name is Platelia Dengue NS1 Ag assay, is a test for dengue made by Bio-Rad Laboratories and Pasteur Institute, introduced in 2006. It allows rapid detection on the first day of fever, before antibodies appear some 5 or more days later.[1][2]

It has been adopted for use in some 40 nations. The method of detection is through enzyme-linked immunosorbent assay.[3]

India has introduced in 2010 the NS1 test costing 1,600 rupees at a private hospital in Mumbai. Now available at Rs 1100 at many private hospitals and laboratories in Delhi.Results available the same day[4]