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News on immunoassay systems and applications.

The test targets antibodies for the viral spike protein and can characterize a vaccine-induced immune response.

Visby's test is a fully integrated PCR device that detects SARS-CoV-2 RNA, while SNIBE's test comprises assays for two different antibodies against the virus.

The test, which received EUA from the US Food and Drug Administration in April, is designed to detect human IgG antibodies in serum and plasma.

Questions around performance and a lack of clear clinical utility have hampered uptake, though improved standardization and vaccine launches could boost usage.

The Seattle-based firm believes its novel collection devices are convenient and safe enough to use at home to draw blood for many types of tests.