Devices › Coronavirus antigen detection test system.
Device brand name · Sofia sars antigen fia ns swab
Sofia Sars Antigen Fia Ns Swab: medical device reports filed with FDA
3,865 reports name it, 2022–2025. Manufacturer given most often on reports: Quidel. Product code QKP.
- 3,865
- device reports naming the brand
- 0% of all MAUDE reports · about 892 a year
- 2
- reports, 12 months to August 2026
- 27 in the 12 months before
- 100%
- classified as malfunction
- 98.1% across the product code
- 0%
- classified as death, as reported
- 0 reports · not verified by FDA
FDA's MAUDE database holds 3,865 reports that name the brand "Sofia Sars Antigen Fia Ns Swab" (sofia sars antigen fia ns swab), received between March 2022 and October 2025; the manufacturer given most often on reports is Quidel. Spellings of one product vary from report to report.
2 reports arrived in the 12 months to August 2026, down 93% from 27 in the 12 months before. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases. The event types recorded are malfunction (100%); across all coronavirus antigen detection test system. reports (product code QKP) death is recorded in 0% and malfunction in 98.1%. Event type is the reporter's classification of the report, not a verified outcome.
The device problems coded most often are false positive result (70.7%), false negative result (24%) and imprecise or erratic results (4.9%). FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."
Reports by month, five years
Reports by the month FDA received them. FDA releases MAUDE data monthly; reports can arrive months after an event, so the newest months grow in later releases.
By year received
Event type and report source
Event type, as classified on the report
Who filed the report
Grey bar: all 26,765 reports carrying product code QKP. Event type is the filer's classification and is not verified by FDA.
Device problems coded
| Device problem (FDA code) | Reports | Share | Share across product code |
|---|---|---|---|
| False positive result | 2,732 | 70.7% | 53.2% |
| False negative result | 926 | 24% | 21.2% |
| Imprecise or erratic results | 188 | 4.9% | 1.9% |
| Incorrect, inadequate or imprecise result or readings | 15 | 0.4% | 8.8% |
FDA's device problem codes as entered on the report; one report can carry several. Generic codes such as "no apparent adverse event" are left out.
In context
| Measure | Sofia Sars Antigen Fia Ns Swab | Product code QKP | All MAUDE reports |
|---|---|---|---|
| Reports | 3,865 | 26,765 | 26,136,888 |
| Share of that pool | — | 14.4% | 0% |
| Classified as death, per 1,000 reports | 0 | 0 | 9 |
| Classified as injury | 0% | 1.7% | 36.2% |
| Classified as malfunction | 100% | 98.1% | 62.3% |
| Filed by the manufacturer | 100% | 94.9% | 94.9% |
Shares are of reports, not of devices in use. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data."
Other brands with product code QKP
| Brand | Reports | Latest 12 months | Classified as death |
|---|---|---|---|
| Quickvue At-Home Otc Covid-19 Test | 4,714 | 30 | 0% |
| Ellume Covid-19 Home Test | 2,999 | 0 | 0% |
| Lumiradx Sars-Cov-2 Ag Test Strip Kit | 2,150 | 0 | 0% |
| Binaxnow Covid-19 Ag Card | 2,076 | 0 | 0% |
| Bd Rapid Detection Of Sars-Cov-2 Veritor | 1,581 | 0 | 0% |
| Flowflex COVID-19 Antigen Home Test | 1,312 | 172 | 0% |
| Binaxnow Covid-19 Ag Self Test 2ct | 1,298 | 53 | 0.1% |
| Quickvue Sars Antigen Test | 785 | 0 | 0% |
| Binaxnow Covid-19 Antigen Self Test | 625 | 0 | 0% |
| Bd Rapid Detection Of Sars-Cov-2 Veritor Assay | 520 | 0 | 0% |
| Binaxnow Covid-19 Antigen Self-Test | 487 | 0 | 0% |
| Ellume Covid-19 Home Test Kit | 470 | 0 | 0% |
| Binax Now Covid-19 Ag Card | 422 | 0 | 0% |
| Ihealth | 362 | 13 | 0% |
| Bd Veritor At-Home Covid-19 Test | 276 | 0 | 0% |
Ordered by report count for navigation only. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA also states that "common products may have a higher number of adverse events due to the higher total number of people using the product."
Questions about Sofia Sars Antigen Fia Ns Swab reports
How many FDA reports name Sofia Sars Antigen Fia Ns Swab?
3,865 medical device reports in the openFDA MAUDE release of 28 Sep 2026, covering reports received through August 2026; 2 in the latest 12 months.
What kinds of events are reported?
malfunction (100%). "Event type" is how the report was classified when filed: death, injury, malfunction or other.
What device problems are coded?
false positive result (70.7%), false negative result (24%), imprecise or erratic results (4.9%) and incorrect, inadequate or imprecise result or readings (0.4%). These are FDA's device problem codes as entered on the report.
Who files these reports?
manufacturer reports (100%). Manufacturers and user facilities are required to report; voluntary reports come from health professionals and the public.
Do these reports show that Sofia Sars Antigen Fia Ns Swab was at fault?
No. FDA states that "MDR data alone cannot be used to establish rates of events, evaluate a change in event rates over time or compare event rates between devices. The number of reports cannot be interpreted or used in isolation to reach conclusions about the existence, severity, or frequency of problems associated with devices." It adds that the reporting system "has limitations, including the potential submission of incomplete, inaccurate, untimely, unverified, or biased data." FDA adds that "a causal relationship cannot be established between product and reactions listed in a report."
How do I report a problem with a medical device?
Through FDA MedWatch (Form FDA 3500 for health professionals and consumers), or to the manufacturer. See the guide on how to report.
Where this comes from. Counts are built from the openFDA Device Adverse Event (MAUDE) bulk export released 28 Sep 2026, which holds reports FDA received through 31 Aug 2026. Brand, generic and manufacturer names are as written on the reports; product code names come from FDA's device classification. A report counts here when any device it lists carries this brand name after punctuation and capitalisation are normalised. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.
Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.