COVID-19 rapid antigen tests or RAT s, also frequently called COVID-19 lateral flow tests or LFT s, are rapid antigen tests used to detect SARS-CoV-2 infection (COVID-19). They are quick to implement with minimal training, cost a fraction of other forms of COVID-19 testing, and give users a result within 5–30 minutes.

衞生署衞生防護中心轄下的公共衞生化驗服務處曾就政府所採購的快速抗原測試(RAT)包作初步評估，並確認其對變種病毒株Omicron有效。 相關評估亦已涵蓋在確認發現Omicron變異病毒株前（即2021年11月前）所生產的快速抗原測試套裝。

A rapid antigen test (RAT), sometimes called a rapid antigen detection test (RADT), antigen rapid test (ART), or loosely just a rapid test, is a rapid diagnostic test suitable for point-of-care testing that directly detects the presence or absence of an antigen.

The Rapid COVID-19 Antigen Test is anin vitro immunochromatographic assay for the qualitative detection of nucleocapsid protein antigen from SARS-CoV-2 in direct nasopharyngeal (NP) swab from individuals who are suspected of COVID-19 by their healthcare provider. It is intended to aid in the rapid diagnosis of SARS-CoV-2 infections.

An RAT is designed to directly detect SARS-CoV-2 virus proteins (antigens) in respiratory specimens. Different brands of tests are available in the market. Most of them require nasal or nasopharyngeal swab samples or deep throat saliva samples. The test is easy to perform. How to choose RAT kits? You can purchase RAT kits for voluntary testing.

2021年4月21日 · Rapid antigen test (RAT) kits have emerged as an important alternative tool to aid in the clinical diagnosis of COVID-19. RAT is based on immunochromatography, which employs antibodies spotted onto nitrocellulose membranes that interact with specific antigens from the patient sample.

The Government accepts RAT kits that have been recognised by the relevant authorities of major markets (including Hong Kong, Mainland, Europe and the United States) as set out below: Department of Health, Hong Kong: Listed Rapid Antigen Tests for COVID-19 under the Medical Device Administrative Control System;

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2022年2月28日 · 第五波疫情來勢洶洶，香港市場上的快速抗原測試（Rapid antigent test，簡稱RAT）套裝選擇眾多，大部分快速抗原測試包採集鼻腔或鼻咽拭子樣本或深喉唾液樣本。