How do Lions know Matthew Stafford had a false positive?

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The Lions announced on Tuesday that quarterback Matthew Stafford had a false positive test for COVID-19. That claim leads to a fairly important question, one that may come up against and again this year: How do they know it was a false positive?

“As a result of a False-Positive test result, he was forced due to NFL/NFLPA protocols to sit out until he received two negative tests,” the team said in its statement. “His testing sequence for the Pre-Entry period was: negative, negative, False-Positive. The next three tests were all negative. To be clear, Matthew does NOT have COVID-19 and never has had COVID-19 and the test in question was a False-Positive. Also, all of Matthew’s family have been tested and everyone is negative.”

Again, how do the Lions know it was a false positive?

The Lions presumably are assuming it was a false positive because it was sandwiched around multiple negative results. In theory, however, the negatives could all have been false. (The chances of that many false negatives is slim.) Or perhaps Stafford could have had the virus for a very short period of time.

Regardless, without some sort of a clear, objective test that declares the positive result to be false (for example, a re-test of the exact same sample that tested positive), there’s no way to know for sure that it was a false positive test. So why insist with such clarity and certainty that it was a false positive?

That said, false positives happen. False negatives do, too. If false results are being generated, they can cut both ways. This leads to perhaps the biggest concern the NFL should have regarding COVID-19 testing: How many false negatives will happen, resulting in a player or coach slipping through the cracks and shedding virus and infecting others in a practice or a game?

35 responses to “How do Lions know Matthew Stafford had a false positive?

  1. Are you going to have this same view when it’s one positive drug test wrapped around negative ones?

  2. Are we going to lighten up on some of this after Nov. 3?

    Tired of this narrative. Why must everyone be assumed to be lying?

  3. Lots of reports of people refusing COVID tests before hospital procedures, then being classified as “presumptive positive.” Those numbers are added to the national totals of positive results. Interesting.

  4. The media loves to peddle fear. Gotta make sure we have an excuse to keep Biden from debating and gotta keep pizzagate out of the light. What better way to do that than with fear porn and wildly inaccurate data reporting on the plandemic.

  5. The Lions presumably are assuming it was a false positive because it was sandwiched around multiple negative results. In theory, however, the negatives could all have been false. (The chances of that many false negatives is slim.) Or perhaps Stafford could have had the virus for a very short period of time.

    ___

    Thats all a stretch…..Its way more likely that it was a false positive.

  6. There is (from what I have read and seen otherwise) up to a 30 per cent margin of error both positive and negative. So sure, shut everything down.

  7. Perhaps someone involved with the testing and with intimate knowledge of test protocols and test results like a team doctor or the test facilitator themselves said “it must have been a false positive”.

  8. Well the Lions did follow the CDC qulaifications listed as far as what constitutes a false positive test.

  9. sweetnlow44 says:
    August 4, 2020 at 4:48 pm
    The media loves to peddle fear. Gotta make sure we have an excuse to keep Biden from debating and gotta keep pizzagate out of the light. What better way to do that than with fear porn and wildly inaccurate data reporting on the plandemic.

    ———————————————————
    Man, I really wish I would’ve invested in tin foil a year or two ago

  10. touchback6 says:
    August 4, 2020 at 4:48 pm
    No season in 2020.

    Expect mutliple outbreaks

    ———-

    You better hope

  11. Many are false positives.

    Even more interesting are the many who receive positive test results in the mail and they haven’t even take the test.

  12. Guys, it was a false positive because it was the Lions…nothing positive happens on the Lions…

  13. Did they do an antibody test on him to see if he was previously infected? The antigen test tells you if you are currently infected.

  14. Statistically speaking, we are never certain that any test is a true or false positive or negative. We can only make statements about the degree of certainty, which can be high but is never 100%.So if you’re going to be a stickler about someone informally making a statement that sounds“absolute”, you’re going to need to always talk about degrees of certainty and never about absolute certainty.

  15. bringbackkosar says:
    August 4, 2020 at 5:26 pm
    It’s a false positive bc Trump said so, duh

    ——
    Trump himself is a false positive

  16. Why are the lions or the NFL reporting one way or the other? On any player? I thought there were hepa laws that said you can’t disclose health results to anyone. If they fail a test and get put on the covid list they aren’t allowed to say one way or the other. This isn’t an injury report where you see a player carted off the field. If Stafford wants to inform people what his health status is let him hold a press conference.

    Looks like the almighty dollar and the NFL just wanting to show how well things are going. And we will have a season come high water or not.

  17. Two negative tests to be cleared doesn’t make much sense. You can test positive for up to three months after contracting the virus, but that doesn’t mean you’re contagious. A large contact tracing study demonstrated that high-risk household and hospital contacts did not develop infection if their exposure to a case patient started 6 days or more after the case patient’s illness onset.

  18. How? It’s pretty simple the article even says it “His testing sequence for the Pre-Entry period was: negative, negative, False-Positive. The next three tests were all negative.” What’s more likely one false positive or five false negatives?

  19. And how do we know that was the actual swab that went up Stafford’s nose? For all of the tests? Without video of the testing, including putting the swab in a bag we can never know for sure. Are we positive it was Stafford who showed up? Do they have his DNA on file? Did they cross check it with a fresh DNA test for each Covid Test? If they didn’t. we can never be sure.

  20. This fear mongering is out of control!! 5 negatives outweigh 1 positive in any equation, especially considering 3 negatives occurred after the positive. Stop fanning the flames of panic!!

  21. The NFL is doing the best they can, and the health experts they hired are doing the best they can. The Stafford family is a very wealthy family due to the way the NFL operates. I understand the frustration. It’s very frustrating for everyone involved. The NFL raises a lot of money for good causes. They’re the good guys.

  22. For the most commonly used type of test False Negatives have a 5-10% chance of occurring, while False Positives are less than 1%.

    The reason for the large share of False Negatives is incorrect testing, as the probe needs to be quite a bit down the throat to be effective.

  23. How do we know any test result is accurate? Reasonable conclusion that it was a false positive if sandwiches between two sets of negatives.

  24. Didn’t his entire family test negative, on multiple occasions as well? That would seem to support the false-positive contention. #selltheteam

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