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Clean Air Club Profile picture
@Clean_Air_Club_
Jun 30 • 6 tweets • 2 min read • Read on X
🧪 Not all covid tests are made the same!!

Would you rely on a smoke detector that only beeped during 28% of fires?

If not, then don't rely on one regular rapid test that picks up on covid only 28% of the time. 🥴

Stats below!! A bar graph comparing the sensitivities of different tests. The title reads "Covid test sensitivity: If you have asymptomatic covid, these are the chances that each test will actually detect it and show a positive result." 1 rapid antigen test is at 28%; 2 rapid antigen tests 48 hours apart is 63%. Lucira covid and flu test is 89%. 3EO molecular test is 95%. Metrix is 97%. Pluslife is 98%. "Takeaway: negative results on regular rapid tests don't tell you much. Citations in caption."
Citations:

1. Zhu et al., “Trial of the Pluslife SARS-CoV-2 Nucleic Acid Rapid Test Kit: Prospective Cohort Study” JMIR Public Health Surveill. 2023; 9: e48107.

2.

3. “Aptitude Matrix COVID-19 Test: Instructions for Use For Healthcare Providers”virus.sucks/pluslife_en/
4. “3EO Health: COVID-19 Test Instructions for Use”

5. “Performance Evaluation of the Lucira COVID-19 + Flu Test” Note that PPA and NPA were used for the sensitivity and specificity stats above.
6. Venekamp et. al. “Diagnostic accuracy of SARS-CoV-2 rapid antigen self-tests in asymptomatic individuals in the omicron period: a cross-sectional study.” 2023

7. Soni et. al. “Performance of Rapid Antigen Tests to Detect Symptomatic and Asymptomatic SARS-CoV-2 Infection” 2023
How to interpret these percentages:

*If* you genuinely have Covid, the chances that you will actually test positive on a single rapid test are 28%.

In other words, 72% of the time that you *actually have Covid* you'll nonetheless be negative on a single rapid. 🥴
If you're wondering why this post has been reposted, it's because the titular caption on the infographic wasn't clear enough in the first version! Huge thank you to Daniel who took a LOT of his time to explain why and suggest more accurate language. 🥳

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More from @Clean_Air_Club_

Clean Air Club Profile picture
Jun 26
✈️ A guide to Covid-Safer Flying ✈️ a black and white vintage picture of an airplane in the sky. Text reads "Covid safer flying" and "update!" There is a clean air club logo in the bottom right.
Before the Airport: Gear

Please treat this as a recommendation of many layers to consider, and remember that any single layer is better than none. The most important layer here, masks, can be achieved for under $5!

Links to recommended gear will be at the very end of the thread Before the airport: If possible, invest in some gear that will help you navigate plane travel. We recommend N-95 masks, the Sip Valve (practice beforehand), glasses (prescription or not), a portable far-UVC lamp or portable purifier, a portable CO2 monitor, antiviral nasal spray, mouthwash with cetylpyridinium chloride (CPC), antiviral herbal tinctures, and a neti pot.
Before the Airport: Prep Try to hydrate extensively for the 48 hours before you plan to arrive at the airport. You may also consider drinking coconut water or water mixed with oral rehydration salts beforehand so that you retain water better. Test for Covid the morning of your flight, then eat a large meal. The goal is to reduce the need to take off your mask as much as possible.
Read 12 tweets
Clean Air Club Profile picture
May 30
🧪Not all covid tests are made the same!!

Some of them detect negatives *much* better than others. Check out the comparisons below, and try to use the highest accuracy testing you can afford. A chart titled “Covid test sensitivity: how confident you can be if your covid test is negative and you have no symptoms.” There are 6 bar graphs showing the performance of different covid tests. 1 Rapid antigen test: 28%. 2 rapid antigen tests 48 hours apart: 63%. Lucira covid and flu molecular test: 89%. 3EO molecular test: 95%. Metrix molecular test: 97%. Pluslife molecular test: 98%. Text below reads: “Reminder: if you get a positive result on any of these tests, it’s 99% accurate. Citations in caption.” Clean Air Club logo is in bottom right.
Citations:

1. Zhu et al., “Trial of the Pluslife SARS-CoV-2 Nucleic Acid Rapid Test Kit: Prospective Cohort Study” JMIR Public Health Surveill. 2023; 9: e48107.

2.

3. “Aptitude Matrix COVID-19 Test: Instructions for Use For Healthcare Providers”virus.sucks/pluslife_en/
4. “3EO Health: COVID-19 Test Instructions for Use”

5. “Performance Evaluation of the Lucira COVID-19 + Flu Test” . Note that PPA and NPA were used for the sensitivity and specificity stats above.web.archive.org/web/2023101721…
clinicaltrials.gov/study/NCT06141…
Read 5 tweets
Clean Air Club Profile picture
May 27
🧪Here's an updated roundup of highly reliable, easy-to-use molecular covid tests on the market today!

Accuracy stats, cost per test, and citations throughout. 🧵 At-Home Molecular Covid Testing: Regular rapid tests don’t produce reliable negative results. Luckily, there are at-home molecular tests that have an accuracy approaching what you get from PCR tests, the gold-standard in viral detection! Increase the reliability of your covid testing by using one of these fast at-home molecular tests. Pictured are four test readers, the clean air club cloud logo, and a sticker that says "update!"
🏆 Coming in at #1, we have the Pluslife Minidock!

This one has an amazing 98.3% test sensitivity -- meaning if it shows a negative result, you can rely pretty heavily on that.

Read more here:

Citation: virus.sucks/pluslife_en/
publichealth.jmir.org/2023/1/e48107
Pluslife Covid test: Reader cost: $310 (DM Clean air club for discount) Test cost: $8 Sold via Altruan.com DM Clean Air Club for discount code Test sensitivity: 98.3% (how reliable a negative result is) Test specificity: 99.3% (how reliable a positive result is) Pluslife also has tests for HPV, Strep, Mpox, Influenza A+B, RSV, and viruses that affect household pets Citation: Zhu et al., “Trial of the Pluslife SARS-CoV-2 Nucleic Acid Rapid Test Kit: Prospective Cohort Study” JMIR Public Health Surveill. 2023; 9: e48107. See also: https://virus.sucks/pluslife_en/
🥈 At a close 2nd place, the Metrix molecular test has an impressive 96.7% test sensitivity and a much cheaper startup cost (though this is negated over time by the more expensive tests). Also a really good system to get.

Citation: web.archive.org/web/2023051116…
Metrix Covid Test: Reader cost: $50 Test cost: $25 Test sensitivity: 96.7% Test specificity: 99% Cost goes down when you buy the reader and tests bundled Citation: “Aptitude Matrix COVID-19 Test: Instructions for Use For Healthcare Providers” https://web.archive.org/web/20230511163447/https://www.fda.gov/media/162403/download
Read 8 tweets
Clean Air Club Profile picture
Nov 26, 2023
Covid can damage every organ system in your body. Here is the labwork to seek out after the acute infection phase has passed. 🧵
The CDC recommends labwork organized by health concern.

1. Blood count, electrolytes, and renal function:
-CBC w/ possible iron studies
-Basic metabolic panel

2. Liver function:
-Liver function tests
-Complete metabolic panel

cdc.gov/coronavirus/20…
3. Inflammatory Markers
-C-reactive protein
-Erythrocyte sedimentation rate
-Ferritin

4. Thyroid Function
-TSH
-Free T4

5. Vitamin Deficiencies
-Vitamin D
-Vitamin B12
Read 8 tweets
Clean Air Club Profile picture
Nov 24, 2023
With the declining accuracy of rapid antigen tests for covid, we need other solutions. Here's a roundup of some at-home molecular tests that offer extremely high accuracy 🧵 An infographic grid that reads "At home molecular covid testing: There are at-home options for fast molecular testing of covid, and all of them are more accurate than regular rapid antigen tests (like what you buy at CVS or Walgreens)." Pictures of various square cartridges are included with the Clean Air Club logo and smiley faces. "These are more expensive and more accurate at-home covid tests."
CUE's at home test offers the highest sensitivity, at 97.4% (100% in clinical use). But the cost is high! CUE Health Covid Test. Reader Cost: $139. Test Cost$55. Test sensitivity: 97.4% (how reliable a negative result is). Test Specificity: 99.4% (how reliable a positive result is). CUE offers financing via Affirm, as well as occasional sales of tests at $38.50/ea with a free reader. Citation: Rebbapragada et. Al., “Performance of the Cue COVID-19 point-of-care molecular test: insights from a multi-site clinic service model.” Clinical Microbiology, Sep 20 2023. See also fda.gov/media/146470
Metrix comes in with almost the same test sensitivity as CUE, for a quarter of the cost 🙂 Metrix Covid Test. Reader cost: $35. Test Cost: $25. Sensitivity: 96.7%. Specificity: 99%. You can get a free reader when you buy 12 tests. Citation: “Aptitude Matrix COVID-19 Test: Instructions for Use For Healthcare Providers” www.fda.gov/media/162403
Read 8 tweets
Clean Air Club Profile picture
Nov 15, 2023
Communicating about covid needs and boundaries can be really hard. Here are some strategies that have helped me navigate this with less conflict and more success. 🧵
1. Discuss covid precautions ahead of time in a low-emotion environment.
2. Set them up for success by focusing on shared values. This could be a shared activity, tradition, or desire. The goal is to connect. Say something like, “I’m really looking forward to our Christmas Eve tradition.”
Read 9 tweets

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