![]() ![]() It confirms sufficient specimen volume and correct procedural technique. A colored line appearing in the control line region (C) is an internal procedural control. QUALITY CONTROL Internal procedural controls are included in the test. The package insert explains why there are positive and negative control swabs in the tests: (Image source: Flowflex package insert screenshot taken on Fri Jan 07 19:40:23 2022 UTC) For professional in vitro diagnostic use only": The package insert for the tests states: "A rapid test for the qualitative detection of SARS-CoV-2 nucleocapsid antigens in nasal swab specimens. The one in the image is an antigen rapid test named " Flowflex" that was released in December 2020 and marketed for professional use, not as an at-home rapid test. for "SARS-CoV-2 Antigen" tests with one label reading, "Positive Control Swab," and the other reading, "Negative Control Swab." ACON Laboratories, in San Diego, sells multiple COVID tests. The image shows two packages from ACON Laboratories, Inc. The positive and negative control swabs are not proof that there is a "fix" for results of COVID tests. (Image source: Instagram screenshot taken on Thur Jan 06 18:22:31 2022 UTC) ![]() It opened: Picture taken secretly by a nurse on shift. The claim appeared as an Instagram post on January 4, 2022. Are COVID-19 tests that are labeled "positive control swab" and "negative control swab" manipulated to deliver predetermined results? No, that's not true: The SARS-CoV-2 test packaging shown in a photograph on social media are included in the kits for quality control and not used for patients, per the instructions in the kits.
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