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Abbott Releases ID NOW COVID-19 Interim Clinical Study Results Confirming Test Sensitivity and Specificity

By LabMedica International staff writers
Posted on 08 Oct 2020
Abbott’s (Lake Forest, IL, USA) has shared new interim clinical data results on its ID NOW COVID-19 rapid test that confirm the data submitted to the US Food and Drug Administration (FDA) in March for Emergency Use Authorization (EUA) and the interim results shared in its May 21 press release.

Abbott has completed an interim analysis of its ID NOW post-authorization study. More...
A total of 1,003 people were evaluated across two care environments: urgent care clinics (acute care) and hospitals and nursing homes (in-patient care). In these two care environments, the ID NOW delivered the following agreement to lab-based molecular PCR tests:
  • Overall performance of 93.3% positive agreement (sensitivity) and 98.4% negative agreement (specificity). Further, in the 161 patients with high viral titers (Ct <33), and therefore most likely to transmit virus, ID NOW showed performance of 97.0% positive agreement (sensitivity).
  • Performance of 95.0% positive agreement (sensitivity) and 97.9% negative agreement (specificity) in subjects within seven days post symptom onset. Further, in the 129 patients with high viral titers (Ct <33), and therefore most likely to transmit virus, ID NOW showed performance of 98.4% positive agreement (sensitivity).
  • Performance of 94.6% positive agreement (sensitivity) and 97.6% negative agreement (specificity) in symptomatic subjects. Further, in the 136 patients with high viral titers (Ct <33), and therefore most likely to transmit virus, ID NOW showed performance of 97.8% positive agreement (sensitivity).
In addition to the post-authorization data, Abbott also provided an update to three studies that were covered in its May 21 interim study press release:
  • Multi-Site Urgent Care: In a completed analysis from a multi-site urgent care clinical setting of 430 symptomatic patients with two or more symptoms, including 53 PCR positive subjects, ID NOW demonstrated performance of 96.2% in positive agreement (sensitivity) and 99.5% negative agreement (specificity) compared to lab-based molecular PCR tests.
  • Everett Clinic: In a completed study at The Everett Clinic in Washington of 974 people, including 23 PCR positive subjects, in partnership with Yuan-Po Tu, M.D., ID NOW demonstrated 91.3% positive agreement (sensitivity) and 100% negative agreement (specificity) compared to lab-based molecular PCR tests.
  • In-patient: In an in-patient care study (hospitals and nursing homes), a total of 518 symptomatic patients were evaluated, including 94 PCR positive subjects. ID NOW demonstrated 79.8% positive agreement (sensitivity) and 94.3% negative agreement (specificity) compared to lab-based molecular PCR tests.

These results point to the important role played by reliable point-of-care testing that is available in convenient and accessible locations where people can get immediate results.

"We recognize there is a lot of discussion about testing and ID NOW, and we want to make sure the public has the facts and real-world data," said Robert B. Ford, president and chief executive officer, Abbott. "The facts we're seeing from one of the largest clinical studies of any COVID-19 test, conducted at some of the nation's leading academic centers, show that ID NOW delivers effective, consistent and reliable performance."

"In the beginning of the pandemic, the scientific community had to rely on samples and modeling to predict test performance," said John Hackett, Ph.D., divisional vice president of Applied Research and Technology for Abbott's diagnostics business. "But now we have a significant body of real-world, clinical data that support the critical role ID NOW is playing in identifying infection rapidly in places where people show up for care."

"Tests are taken at a moment in time and they detect the virus once there's enough viral material in a person to be able to detect it," continued Dr. Hackett. "While there's no perfect test, to fight a pandemic, we need a combination of gold standard lab-based PCR and accurate, reliable rapid tests like ID NOW to help reduce risk in society and slow the spread of the virus."




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