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Have you received a Covid 19 booster shot?   The Healthy You: Health and Fitness Polls

Started 11/19/21 by Showtalk; 2500 views.

From: Showtalk 


BinaxNow are only good for around 6 months then need to be replaced.

Risa (Risa25)

From: Risa (Risa25) 


Someone else who uses the word kerfuffle!  I am right chuffed :-)

Jeri (azpaints)

From: Jeri (azpaints) 


Our tester site is in Cardinal Stadiums parking lot.  Its so huge it would be interesting to see if they could close it down quickly.  I think there is or will be a second tester site in ASUs football stadium parking lot.


From: Showtalk 


Ours was a small site.

They don't have a tiny Dallas Semiconductor real time clock / calendar which can be programmed to self-destruct at some date / time in the future.

The rate at which the effectiveness of all sorts of meds and test reagents degrade tends to  be gradual, and the expiration dates are likely well into the less than 1% efficacy loss point.

So in a pinch, it's perfectly fine, when the alternative is nothing, to take an expired test, especially if the expiration date is nearer in the past than its purported shelf life.

Why? During the first Gulf War, the Army started doing a long term (30 years or so) test to actually measure whether "expired" medicines were really unsafe, or if the dates were more lawsuit-paranoia induced artificially short (most likely scenario).

It turned out after storing meds and such in a group of "time capsules", then subjecting everything to periodic sampling and laboratory testing to determine exactly how effective / ineffective the stuff is, years and decades after expiration, while stored at a range of temperatures, humidity, etc. which can affect degradation rates.

Here's what I suspect based on these results and others involving long term storage of stuff (as a survivalist I have always been VERY interested in this for obvious reasons - some point post-apocalypse, all stored supplies will have passed their expiration dates yet there will be illness / injuries where those can save one's life.)

Stuff degrades along a natural logarithmic curve that is very similar to voltage across a capacitor and resistor in parallel when the excitation voltage is removed. Radioactive decay follows a similar mathematical profile.

Essentially they set expiration dates very, very conservatively along that decay curve, probably well less than 5% of the elapsed time required to lose half the effectiveness. So the half-life can be estimated as, maybe 20x as long as the time between manufacture and expiration date.

So, a test kit made in July 2021 with an expiration of January 2022, most likely will be accurate enough to get believable readings a full decade out, around January 2032, and would reach maybe a significant number of false negatives and truly coin toss levels of accuracy around 2042.

By that time there should reasonably be replacement tests available. So it's just a huge waste of resources to throw things out at the stroke of midnight on the printed "expiration date".

If there's a shortage of tests and a bunch of them expired in January 2022,. I'd have no problem relying on them through January 2023. The amount of accuracy degradation would be negligible during that window.

Heck, I have some cough syrup that "expired" in 2014 and it seems to be just fine.


From: Showtalk 


If I can get replacement i would not rely on old medications. I wouldn’t eat food that old, either.

Showtalk said:

If I can get replacement

Yes This is to have options when a replacement is not available.


From: Showtalk 


That’s a scary thought.