Jul 21, 2021 · Friday 16th - Negative PCR Tuesday 20th - Positive PCR Wednesday 21st - Negative antigen test (lab tested Thursday 22nd - Negative PCR Monday 26th - Negative …

Jul 10, 2021 · "The specificity of antigen tests is generally as high as most NAATs, which means that false positive test results are unlikely when an antigen test is used according to the …

Jan 10, 2022 · That explains the scenario where someone was sick a couple of weeks ago and is now negative on the antigen test but positive on the PCR. The story is less clear with omicron …

Oct 23, 2023 · Positive for pcr, negative for toxin but have symptoms I have all the symptoms of c diff, diarrhea, bloating , dizziness, and nausea. But the toxin test came back negative but the …

Sep 16, 2021 · That’s definitely a PCR test if it says dna in the title. But the current recommendation is to treat with a positive PCR if symptoms are present. If symptoms are not …

Jul 15, 2021 · Flying Canada-US — PCR vs. Antigen Test I am going to be flying to the US from Canada soon and am a bit confused by the COVID testing requirements. It seems like a rapid, …

Aug 25, 2021 · My parents are traveling to Switzerland (Geneva) in September for a wedding. Before entering the USA they need to get a Covid-19 test. They are both vaccinated. I see that …

Apr 17, 2022 · Rapid NAAT vs Antigen Is there any issue with using a rapid NAAT test or an Antigen test? I can't find any antigen tests nearby and due to the holiday weekend, our PCR …

Jan 4, 2022 · Very basic/non realistic example: If your pretest probability is 5% based on disease prevalence, a negative antigen test can lower your probability to say, 3% (total guess, just to …

May 30, 2022 · Whereas, the antigen home kits detects the virus' antigen, which is initially detectable in first exposure. Therefore, it's recommended to do the antigen test for initial tests …