INDICAID COVID-19 Rapid Antigen At-Home TestĪmplitude Solution with the TaqPath COVID-19 High-Throughput Combo Kit Name of TestĪDVIA Centaur SARS-CoV-2 Antigen (CoV2Ag) Included in the complete list are sensitivity and specificity measures, specimens required, target genes, test details, and manufacturing capabilities (if provided). Commercial testsĭownload the complete list of commercial tests (xlsx). This page was last updated on March 30, 2022.

We have compiled a list of commercial and laboratory-developed tests that have received FDA Emergency Use Authorization. Types of molecular tests being developed for SARS-CoV-2Ĭurrent antigen and molecular tests with FDA EUA Status.How do molecular tests detect SARS-CoV-2?.The US FDA recommends that manufacturers use these terms to indicate that a nonreference standard was used when evaluating the test. Essentially, a lower limit of detection indicates a more sensitive test, with fewer viral copies per sample necessary to elicit a positive test result. The terms “sensitivity” and “specificity” may not appear in the manufacturers’ information sheets, but are often reported as “positive percent agreement” and “negative percent agreement.“ Sensitivity may also be measured by calculating the limit of detection, which is the lowest detectable number of virus copies in a sample at which the test will return a positive result at least 95% of the time. When available, the number of samples used for sensitivity/specificity definitions are listed in the product description. If sensitivity or specificity is not listed, it was not available from the manufacturer at the time of posting. These measures are not independently validated by the Johns Hopkins Center for Health Security. A highly specific test should rule out all true negative results. A highly sensitive test should capture all true positive results. Where available, we list the manufacturer-reported sensitivity and specificity data. Submission of this form does not guarantee inclusion on the website. If you are a manufacturer or research institution that has an EUA-approved antigen or molecular test that is not yet listed, please submit your information here. Noninclusion in this list should not be interpreted as a judgment on the validity or legitimacy of tests. This website is not intended to be used as a reference for funding or grant proposals. This page is updated twice weekly and includes only tests that have received EUA either from commercial manufacturers or laboratory-developed tests.

Many tests now available or in development can use saliva or nasal swabs that facilitate easier sampling procedures for healthcare providers and patients.įor information on serology (antibody) tests, visit our serology tracker or visit our report outlining the needs of a national serology strategy.

The nasopharyngeal tract likely has (1) active virus replication and (2) enough virus to be detected in test kits. This site is relatively easily accessed, compared to the final site of viral infection: the lower respiratory tract. For diseases that are primarily respiratory in nature, like COVID-19, nasopharyngeal swabs have been the most reliable, as they sample an area of the respiratory tract where the virus appears to first infect an individual. Most samples are collected using nasopharyngeal swabs or a sputum cup, although the virus may also be detected in feces, urine, or blood. These tests require samples from the patient that are likely to contain virus. NAATs include the polymerase chain reaction (PCR) assay in a laboratory to amplify viral genomic material for detection and can provide results in hours to days other techniques include LAMP and next generation sequencing. Molecular tests called nucleic acid amplification tests ( NAAT) rely on amplification of existing genetic material in the sample.

These rapid tests detect basic levels of antigen already present in a sample, providing only a simple “yes” or “no,” similar to a pregnancy test. Antigens are found on the surface of the virus particle, which are also shed in patient tissues. The viral genomic material for SARS-CoV-2 is ribonucleic acid (RNA), which remains in the body only while the virus is still replicating, even at very low levels.Īntigen tests detect specific viral proteins ( antigens) present in a patient sample taken using nasal or nasopharyngeal swabs and can provide results in under a half hour. These tests inform researchers and health providers of the presence of the pathogen, either by amplifying and detecting its genetic material or identifying unique markers of the pathogen itself. Diagnostics able to detect current, active infections are typically antigen- and molecular-based tests. The diagnostic testing field for COVID-19 is rapidly evolving, with many tests focused on diagnosing patients with active viral infections.

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