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HIV testing is a key factor in HIV prevention ... to detection of HIV infection for first-, second-, third- and fourth-generation HIV immunoassays, and the HIV-1 western blot assay.

Accurate diagnosis is imperative. There have been four generations of immunoassays for HIV screening and diagnosis, and third- and fourth-generation tests offer very high performances ...

but are sometimes unable to detect recent HIV infections acquired in the past few weeks. Many tests are based on older ‘second-generation’ technology, but a ‘fourth-generation’ test with better ...

with the same accuracy as many clinic-based tests. Even more revolutionary are fourth-generation HIV tests that can detect infection earlier than ever before. These tests look for both HIV ...

They co-developed various HIV test kits, including China’s first third-generation and fourth-generation HIV diagnostic reagents, and obtained WHO prequalification in 2016. Now their products are ...