Virol J January 2021 PMID 33422083

False negative rate of COVID-19 PCR testing: a discordant testing analysis.

Jamil N Kanji, Nathan Zelyas, Clayton MacDonald, Kanti Pabbaraju, Muhammad Naeem Khan, Abhaya Prasad, Jia Hu, Mathew Diggle, Byron M Berenger, Graham Tipples

Mentions

111
Peak: 17 in Sep 2021
across 5 sources since Jan 2021

Extended reach

572,698
potential audience

Total likes

127

Video views

404

Mentions per month

Jan 2021 – Aug 2024

Where it's discussed

  • X / Twitter95 posts
  • Reddit7 posts
  • News4 articles
  • Facebook3 posts
  • YouTube2 videos

AI synopsis

What people are saying

The discussions reflect a mixture of agreement and scientific debate, with many posts citing specific false negative rates (up to 30%) and referencing detailed studies, illustrating active engagement with the research and its implications on testing accuracy and pandemic management.

AgreementModerate agreement

Most discussions acknowledge the study’s findings about false negatives being a real concern, showing general agreement with the article's implications.

InterestHigh interest

The posts demonstrate a high interest in the reliability of PCR testing, referencing studies, and sharing statistical data.

EngagementModerate engagement

Participants discuss technical aspects like false negative rates, PCR accuracy, and scientific validation, indicating active engagement.

ImpactModerate impact

The discussions suggest that the article influences opinions about public health policies and testing strategies, though mostly in an academic or skeptical context.

Abstract in brief

  • The study evaluated the false negative rate (FNR) and sensitivity of a lab-developed RT-PCR test for SARS-CoV-2 by analyzing discordant test results from patients, finding a false negative rate of approximately 7-9%.
  • Most false negatives were linked to low viral loads in patients, emphasizing the importance of considering multiple samples and testing stages for accurate diagnosis.
  • The findings highlight the need for ongoing assessment of RT-PCR assay performance and suggest that clinical evaluation beyond test results is crucial to avoid missing COVID-19 cases.]

Top posts

Most liked on X and Bluesky
Semih Tareen
@virusfantom · X

Linki tazeliyorum https://t.co/rmJTb2ynzt

Sep 6, 2021 · 39 likes · 2 shares · 149,985 followers View post →
Ricardo Alvarez
@RicardoAlvarezC · X

@miguelmazoz53 Muy buena pregunta! R:todos los datos estadísticos están basados en PCR’s q NO SON DIAGNÓSTICOS y dan 97% FALSOS POSITIVOS hecho incluso admitido xFDA Efectos adversos inyección se considera q VAERS solo capta del 2-3%,así q fácilmente van 150millones https://t.co/hslR4zMYK8 https://t.co/t3SkTdUIAw

Sep 15, 2021 · 11 likes · 4 shares · 11,104 followers View post →
UofA Infectious Diseases
@UofA_ID · X

False negative rate of COVID-19 PCR testing: a discordant testing analysis Congratulations @KanjiJamil et al https://t.co/2XjyF4CIWP

Jan 9, 2021 · 10 likes · 3 shares · 2,048 followers View post →
Hannah Davis
@ahandvanish · X

sources for PCR false negative rates: https://t.co/7MPYyPuH6f https://t.co/K0LXvqrbbH https://t.co/ZXYEJYfIus https://t.co/MefnhtjpYQ

Dec 21, 2021 · 9 likes · 56,312 followers View post →
Virology Tweets
@VirologyJ · X

False negative rate of COVID-19 PCR testing: a discordant testing analysis https://t.co/j1QYa6CkRg

Jan 9, 2021 · 5 likes · 9,697 followers View post →
AncientSwordRage #Free
@PureFerret · X

@imhere2retweet @MelxRedgrave @scribecheck How would you be sure you don't have it if you're asymptomatic? Don't forget about false negatives https://t.co/r7ETUkR9cq

May 1, 2023 · 4 likes · 306 followers View post →

All mentions

Paradigm Shift
@zWholeBeing · X

@rup7771 Meanwhile, examine: https://t.co/Klv9ymg1dW https://t.co/vtmtPlM9E1 https://t.co/p1OeVJAy4R

Aug 10, 2024 · 224 followers View post →
ClimateRealism
@realism_climate · X

@wodarg Auch da sehen Sie die Realität nicht. Erinnert mich auch phänotypisch an eine spanische Romanfigur https://t.co/LwwMCAPJ4U https://t.co/3h8SzQgozS

Jun 22, 2024 · 1 like · 548 followers View post →
DepriveDolphin
@BeefJerkyChef · X

@QuackDetector https://t.co/uxSXW8CAbg PCR has a false negative and positive of approx 30% Call them a quack all you want, random leftoid internet guy. But the PCR is inaccurate and should never be used in this fashion ever again.

Jan 7, 2024 · 20 followers View post →
Truth In Numbers
@Truth_in_Number · X

@Canuk_ExPat 3. All of the medical research shows that the PCR test is more likely to yield a false negative than a false positive. https://t.co/XO9BHJSO2B

Dec 29, 2023 · 6,426 followers View post →
Truth In Numbers
@Truth_in_Number · X

@ADPinOK @RedactedMom @tommyBoomboom @vancemurphy The biggest problem with the PCR test for COVID was false negatives. It was far more likely to miss an actual infection than it was to to report a false positive. https://t.co/XO9BHJSgd3

Dec 12, 2023 · 2 likes · 6,426 followers View post →
Askgerbil Now
@Askgerbil · X

@SenatorRennick "Between January 21 and April 18, 2020, 100,001 COVID-19 tests (95,919 patients) were completed with 1,954 (2%) individual cases confirmed... the overall positivity rate was 2.2%. Forty-nine (0.05%) were found to have discordant results" https://t.co/VPc98X4S2s #PublicHealth

Jul 27, 2023 · 4,241 followers View post →
OnSecondThought
@JRobertNichols · X

@lsdres @DrLoupis I partially agree with you. I was told all testing for flu stopped and they treated all flu-like symptoms using the CDC Covid protocols. Here is a study I read about related to the PCR. https://t.co/YllAnskC4J

Jul 10, 2023 · 1 like · 295 followers View post →
FB
@FredBeamer3 · X

@Detrieman @stkirsch @denisrancourt RT-PCR is a valid diagnostic test for RNA sequences of SARS-CoV-2 because it has optimized primer-probe sets. Diagnostic cutoff values are based on LOD, limit of detection from analytical validation. https://t.co/gcpR6s8trK

Jul 9, 2023 · 191 followers View post →
Being_Bohemian
@being_bohemian · X

@ColinASylvester @oakey_doakey @Rachel_deSouza @educationgovuk 2) https://t.co/A26bYPKgDc

May 20, 2023 · 13 followers View post →
Being_Bohemian
@being_bohemian · X

@ColinASylvester @oakey_doakey @Rachel_deSouza @educationgovuk 1)https://t.co/A26bYPKgDc ...and... 2) https://t.co/GONZUPC34r

May 20, 2023 · 13 followers View post →
AncientSwordRage #Free
@PureFerret · X

@imhere2retweet @MelxRedgrave @scribecheck How would you be sure you don't have it if you're asymptomatic? Don't forget about false negatives https://t.co/r7ETUkR9cq

May 1, 2023 · 4 likes · 306 followers View post →
ClimateRealism
@realism_climate · X

@KarlHei40571337 @CarstenMichael7 @DrPuerner https://t.co/LwwMCAPJ4U

Apr 2, 2023 · 548 followers View post →
Brian Birmingham
@BrianBirming · X

@Meowfurian

Apr 1, 2023 · 5,834 followers View post →
FB
@FredBeamer3 · X

RT @FredBeamer3: @islantstudio @MadSpatter He is lying about RT-PCR, which is actually a valid diagnostic test for RNA sequences of SARS-Co…

Mar 3, 2023 · 1 share · 191 followers View post →
FB
@FredBeamer3 · X

@islantstudio @MadSpatter He is lying about RT-PCR, which is actually a valid diagnostic test for RNA sequences of SARS-CoV-2. Primer-probe sets are specific for the coronavirus, with internal controls as housekeeping genes. False positive rates are near zero. https://t.co/gcpR6s91hi

Mar 3, 2023 · 1 like · 1 share · 191 followers View post →
llantwitad
@llantwitad · X

@canadianbaykin @Ellif_DWulfe @_SaveOurStatues @IsabelOakeshott @Telegraph Know about the modern car. He’s one man saying shit that the scientific community has proven wrong. Here. https://t.co/fpH5BYX684

Mar 1, 2023 · 459 followers View post →
llantwitad
@llantwitad · X

@canadianbaykin @Ellif_DWulfe @_SaveOurStatues @IsabelOakeshott @Telegraph https://t.co/fpH5BYX684

Mar 1, 2023 · 459 followers View post →
sue_ecampbell
@sue_ecampbell · X

@Pleasure_Lab https://t.co/5valkXUIwM This work adds to the literature by demonstrating that the FNR of SARS-CoV-2 molecular assays is low [1, 27, 28] and subject to viral load dynamics over time.

Feb 5, 2023 · 1,228 followers View post →
BP2018 B.Price
@BP20185 · X

@pekkanen_risto @ER_Korhola False negative rate of COVID-19 PCR testing: a discordant testing analysis https://t.co/K6hSMi13nS

Jan 7, 2023 · 1 like · 456 followers View post →
gycm
@gycm232 · X

@vox_void @Womens_R1ghtsUS @siztaroze @NZKylo @KimDotcom https://t.co/wJda45c7ed here you go false positive negative rates are pretty low

Dec 26, 2022 · 5 followers View post →
Darwin
@DarwinEmmiYedek · X

@Umut22889804 @armanac05 @kenaninac @OpDrBilgehan RT_PCR (ters transkripsiyon polimeraz zincir reaksiyonu) testlerinde doğruluk oranı %90’ın üzerinde. https://t.co/7Y9Sk0G8wO

Nov 3, 2022 · 257 followers View post →
vvalkyri
@vvalkyri · X

@FinchTH @truthisjustice2 @michaelmina_lab here's one from Jan 2021 https://t.co/KMydyR6RmD

Oct 26, 2022 · 644 followers View post →
Trish Orwen
@trishorwen · X

@emilyesfraser This study finds PCR tests can give false negatives, and now we’re dealing with a veritable soup of new variants so false negatives are not surprising. https://t.co/0Z5CVsHNvH

Oct 19, 2022 · 3 likes · 2,736 followers View post →
Druer
@TDruer · X

@ScottGi93141573 @NickDTRT @JuniperBerry74 @drclairetaylor As someone who has personally used PCR in a lab setting, PCR tests are highly accurate. https://t.co/hzYcXrKLcL

Sep 15, 2022 · 109 followers View post →
Edward Cating
@edward_cating · X

@sigmastarstate https://t.co/VO7HsKRA9N

Aug 4, 2022 · 1 like · 15 followers View post →
Darwin
@DarwinEmmiYedek · X

RT_PCR (ters transkripsiyon polimeraz zincir reaksiyonu) testlerinde doğruluk oranı %90’ın üzerinde. https://t.co/7Y9Sk0oxFg

Jul 10, 2022 · 1 like · 257 followers View post →
DarvinEmmi
@DarvinEmmi · X

@mehmetacar1914 @tipsiztibbiyeli @armanac05 Pcr testi doğruluk oranı %90'dır. https://t.co/gXKEDgp8WT

Jun 17, 2022 · 1 like · 410 followers View post →
Krebiozen
@krebiozen · X

@ogilville1 @mpc_xetts @msabouri @volpiranyas @Alex_on_A14 @SkepticalMutant @provaxtexan @isthisnetaken @ShockTraumaRN @JonathanHannah @JamesLynchGTC @PremierImproves @malo_j @FvckYourFear @Tryingmypatient @chimera414 @JimeeLiberty @TonyBaduy @itisjustmebabe @WalterTAllen @Diar380 @realshocks @AspAlaAsnAsnTyr @kath2cats @756Elizabeth @mcfunny @skepticalprune @ShockTraumaNP @richykirsh @kcgetaway7 @RandomUrban @andylumm @WendyOrent @Nockit1 @Willard1951 @pompili_amanda @ZaynJaffer @PLHartungRN @raouldukeerik @spoonsterboss1 @AndrewLazarus4 @PiattPicks @Fannyi5 @doom37455413 @sammy44231 @NoMisinfoToday @SallyJiggles @zeetubes @DPirate2020 @Monstercoyliar In this study, of 93,965 negative patients, 49 were found to be false negatives. That's 0.05% of them. Apply that to the 3,410 negative tests in the Pfizer study, and you would expect about 2 of them to be false negatives, not all, as some

May 9, 2022 · 2 likes · 953 followers View post →
Send Dopamine ♺
@SendDopaminePls · X

@foremorebeers @Scoot50384877 This study says 17% false negative. https://t.co/1o6KTLhDbw.

Apr 27, 2022 · 487 followers View post →
IzJohnston
@IzJohnston · X

@TomBoylesID @Doctor_Cr @ClareCraigPath 1/4 https://t.co/gtQ0d171Bp discordant results 49 FPP & 52 FNP Since only the FNP’s were studied but their rate was on par with the FPP, it is fair to figure that the FPP rate is also 9-10% For a total error rate 18.3-20%

Apr 25, 2022 · 19 followers View post →
IzJohnston
@IzJohnston · X

@Doctor_Cr @TomBoylesID @ClareCraigPath 2/4 https://t.co/gtQ0d171Bp discordant results 49 FPP & 52 FNP Since only the FNP’s were studied but their rate was on par with the FPP, it is fair to figure that the FPP rate is also 9-10% For a total error rate 18.3-20%

Apr 25, 2022 · 19 followers View post →
Leon
@Leontraveller_ · X

@KarenWenLin 只谈数据,PCR假阴性可能有9%,就算只有5%,意味着2000万人口PCR数据错误至少上百万。Omicron的R0至少9。对于一个高传播性低毒性的病毒,传播快无症状多,基本数据就说明实际清零根本不可能。https://t.co/CUrzq65Z05

Apr 18, 2022 · 1 like · 11,119 followers View post →
Joe Cautec
@JCautec · X

@emilygraymd_mph @drkatmclean BS. PCR had 52 false negatives in 95,919 patients. 49 false positives. https://t.co/LUpA6utasu In Denmark. The RATs experienced a 30% false negative rate. Additionally it only found 40% of the positive case rate also. https://t.co/KkNV6m56A4.

Mar 28, 2022 · 1,566 followers View post →
Halil Babilli
@halilbabilli · X

@ilvana @trblnfxn Skalaya gel :) Studies of false-negative (FN) results from respiratory samples for SARS-CoV-2 are variable demonstrating FN rates (FNRs) ranging from 1 to 30% https://t.co/YKDzOZG9eB

Mar 3, 2022 · 56,949 followers View post →
Elke Babiuk
@ElkeBabiuk · X

Why did Fatah interview an EO with an agenda & unfamiliar with interpreting science? Be Best: @CBCNews This unsupported by science/med? "Forty-nine (0.05%) were found to have discordant results (total 101 swabs including 46 patients with two swabs...." https://t.co/QNHJTtF40a

Feb 12, 2022 · 1 like · 4,378 followers View post →
Dee_Bourne_
@Dee_Bourne_ · X

@dirgarambe Itu dpt 1% hasil riset sendiri kah? Kok beda sama yg ada laporannya? https://t.co/YaOJywSx2y

Feb 8, 2022 · 66 followers View post →
Incarcerated_Alaska
@BirdChayser · X

@supersammystar @kare11 This seems to say otherwise.. https://t.co/sj0A9bd4Ju They sometimes have a specificity issue but false positives are extremely rare.

Jan 9, 2022 · 250 followers View post →
James French
@grade1view · X

@paulthomassj @ElsiesWoke I would take into account the clinical situation as the good standard isn’t always golden https://t.co/0X2bkKQmns

Jan 6, 2022 · 1,422 followers View post →
Nico Vaes
@VaesNico · X

@merlyntje @StevenQ74 @natas_groen @IngeGem @bergdaantje Bewijs maar. De wetenschappelijke studie graag. Hier alvast een studie die het tegendeel aantoont: https://t.co/3xGChSlsks Jouw beurt.

Jan 1, 2022 · 185 followers View post →
JR
@JR_2020 · X

@wakeupmummy Things are almost always more complicated than people realize or are told: https://t.co/JPFjVMHKom

Dec 31, 2021 · 771 followers View post →
Silvia mdq
@mdq_silvia · X

RT @RicardoAlvarezC: @miguelmazoz53 Muy buena pregunta! R:todos los datos estadísticos están basados en PCR’s q NO SON DIAGNÓSTICOS y dan…

Dec 29, 2021 · 4 shares · 54 followers View post →
KVV
@KVV604 · X

@RGoudvis @Fishisgood4you @AriBeuker @cornaldm Tja false positive/negative uitslagen zijn zeer zeldzaam kunnen niet compleet uitgesloten worden. Zie https://t.co/ivRW8ytIIN

Dec 28, 2021 · 22 followers View post →
rico
@rico78950807 · X

RT @Canhistoryrules: @rico78950807 @CBCToronto https://t.co/4aFIrjC3TH https://t.co/AINianj40V

Dec 27, 2021 · 1 share · 2,615 followers View post →
Ben
@Canhistoryrules · X

@rico78950807 @CBCToronto https://t.co/4aFIrjC3TH https://t.co/AINianj40V

Dec 27, 2021 · 1 share · 1,332 followers View post →
Luc Aerts
@Luketheduke1960 · X

@JanDSmit @MikeJavv Ik zie net dat ik een verkeerde link gestuurd heb, sorry. Dit is de juiste : https://t.co/3z8myfKmsX

Dec 26, 2021 · 1,316 followers View post →
tess
@xsphi · X

@eurydicelives @womveg This says 9.3% (January 2021): https://t.co/H05Pk9ImYo

Dec 26, 2021 · 2 likes · 5,584 followers View post →
Ana Di Zacco
@Anazacco · X

@gasparcuartero @SomosCosteros @LolaneuroMD https://t.co/X0tvw1EerB https://t.co/dxP6VVtKWo https://t.co/IwkAM8jPrs https://t.co/dBqYeEnFGU

Dec 24, 2021 · 2 likes · 1 share · 2,175 followers View post →
Jhonatanro
@Jhonatanro · X

RT @RicardoAlvarezC: @miguelmazoz53 Muy buena pregunta! R:todos los datos estadísticos están basados en PCR’s q NO SON DIAGNÓSTICOS y dan…

Dec 23, 2021 · 4 shares · 5,727 followers View post →
Carlos AT
@CarlosMilimpera · X

RT @RicardoAlvarezC: @miguelmazoz53 Muy buena pregunta! R:todos los datos estadísticos están basados en PCR’s q NO SON DIAGNÓSTICOS y dan…

Dec 23, 2021 · 4 shares · 1,120 followers View post →
Hannah Davis
@ahandvanish · X

sources for PCR false negative rates: https://t.co/7MPYyPuH6f https://t.co/K0LXvqrbbH https://t.co/ZXYEJYfIus https://t.co/MefnhtjpYQ

Dec 21, 2021 · 9 likes · 56,312 followers View post →
SHUTTY
@apshutt · X

@alamoalfie @ErrolLea @maryaalexand1 @BQuilty https://t.co/z8EV8iG5G9

Dec 17, 2021 · 746 followers View post →
David Halfacree
@HalfacreeDavid · X

@itssophiemorris @lukemcgee It probably is wise to be mindful that a PCR test isn’t 100% reliable (the usual qualifier that I have no expert knowledge in the field). https://t.co/gZObBfk2v1

Dec 17, 2021 · 1,310 followers View post →
Abo Barakat Arifi
@aborifi · X

@brkb19 @_b_meyer 1 https://t.co/PbrGu29st8 2- https://t.co/dJ4TUjDygx Daher ist ein

Dec 9, 2021 · 1,866 followers View post →
David K. Poole
@dkpoole55 · X

@danfred_ca @richardzussman @GlobalBC Should have been vaccinated and a pcr test. Feds should be providing some details. Assuming they were tested false negatives from PCR test have been as high as 30%. There are a number of variables thht can cause this https://t.co/kNFcnnBUQJ

Nov 30, 2021 · 1 like · 10 followers View post →
Nico Vaes
@VaesNico · X

@BoyceM141 @ITWT10 @KathyConWom That story has been debunked so many times now it's hard to believe it. https://t.co/3xGChSlsks

Nov 22, 2021 · 185 followers View post →
Vicki Allen Crabb
@crabb_vicki · X

@USBornNRaised @kevinault @scott4670 @DrTomFrieden How did you determine you DIDN’T have COVID? Be specific. Considering that the tests have a significant percent of false negatives (as high as 30%), it does not mean it’s deceitful. https://t.co/1BvlaE4dKx

Nov 20, 2021 · 2 likes · 5,532 followers View post →
Sarcasmoloog
@sarcasmoloog · X

@Adinda261678932 @radboudumc Daarom is er ook een cycle threshold. Dit verhoogt de betrouwbaar. Verder: https://t.co/BBOdeE8mlT

Nov 19, 2021 · 165 followers View post →
Nico Vaes
@VaesNico · X

@jenanluvsangels @Marc_Montana @Daniel_SaveUSA @claudiatenney Here's an actual scientific study on this exact subject, which shows the reliability of PCR testing to be VERY high: https://t.co/3xGChSlsks

Nov 12, 2021 · 185 followers View post →
LooptAlEenTijdMee
@LooptAl · X

@R1979SvB @LiveAndLearnNL @stichtinglv @HarambamJaron Onzin. Als jij een andere bron kan vinden, graag. Het lijkt erop dat je er totaal naast zit. https://t.co/OB1YydZ8MQ

Nov 10, 2021 · 1 like · 20 followers View post →
Dorothy Lawrence
@dorothylaws_ · X

RT @RobSomerville1: @RodMGB I have a little experience with these tests. Our whole family had Covid, most of us tested positive but not ev…

Oct 28, 2021 · 1 share · 802 followers View post →
Rob Somerville
@RobSomerville1 · X

@RodMGB I have a little experience with these tests. Our whole family had Covid, most of us tested positive but not everyone. This study says about 10% of PCR tests show false negative https://t.co/bl7tU6MN1C I believe false negatives can be higher towards 20%

Oct 23, 2021 · 1 share · 7,240 followers View post →
Mutz
@MutzUk · X

@UrquhartSir @flufficat @auntiedodo Just putting the word fact in big letters at the end of your Tweet does not protect you from being a #kunt or being called out on your lies. https://t.co/cMLwnsNQUu

Oct 19, 2021 · 254 followers View post →
Tref
@climbtechy · X

@fedupfish @StroudCorona Worth reading https://t.co/NxlwpFhWrr

Oct 10, 2021 · 179 followers View post →
David Osborn
@SafeDavid3 · X

@DRTomlinsonEP @microlabdoc @mjb302 @LawtonTri @hughes_eilir @Linzofm87 @ThePalpitations @huwwaters @BarryMcAree @isfrackingsafe Very disturbing indeed! Recent paper reports almost 10% False Negative Rate for PCR Test (9.3% to be precise). So about 1 in 10 people walking around happy and confident they're disease-free are potentially infected and spreading

Oct 9, 2021 · 2 likes · 1,570 followers View post →
M C ERONAT @ Dubai
@eronat · X

@sapbasis123 @zeki88002256 @drbulentpolat Enformasyon mühendisiyim. https://t.co/evVWkS3vUo https://t.co/i8XCgxvT4E

Oct 3, 2021 · 4,568 followers View post →
John Akerman Özgüç
@Aquinoxmusic · X

@Nebiwnl @JohnDoe78084921 @Lisanne_1908 het leesvoer deed haar 'hersenen' ontploffen, niemand kan het zien nu dus nog maals: https://t.co/PjOM6BEA6G https://t.co/WsPrryOPRP https://t.co/ItiZ5iyu1q https://t.co/Qi84HMuQAG https://t.co/FyWtgRKpHL

Sep 30, 2021 · 2 likes · 414 followers View post →
John Akerman Özgüç
@Aquinoxmusic · X

@Lisanne_1908 leesvoer voor jou https://t.co/PjOM6BEA6G https://t.co/WsPrryOPRP https://t.co/ItiZ5iyu1q https://t.co/Qi84HMuQAG https://t.co/FyWtgRKpHL

Sep 30, 2021 · 414 followers View post →
Harry Bloke
@HarryBloke · X

@covidbaseau

Sep 28, 2021 · 245 followers View post →
haumake17
@haumake17 · X

@Fon338 @SGalbertoMN @Jasuno_247 @RealCandaceO You could read through this(which I haven't). Seems to be saying what I heard previously. https://t.co/yUN2KJFypK

Sep 18, 2021 · 117 followers View post →
John Akerman Özgüç
@Aquinoxmusic · X

@elstenhengel @anaobscura @PartijvdDieren Het is gewoon verkapt fascisme om dit op te dringen bij mensen. Bovendien stoelt het beleid niet op gedegen wetenschappelijke basis. https://t.co/PjOM6BEA6G https://t.co/WsPrryOPRP https://t.co/ItiZ5iyu1q https://t.co/Qi84HMuQAG https://t.co/FyWtgRKpHL

Sep 17, 2021 · 414 followers View post →
John Akerman Özgüç
@Aquinoxmusic · X

@anaobscura @PartijvdDieren De wetenschap zegt juist dat de corona vaccins BS zijn. En dat de pcr test super onbetrouwbaar is. #coronapas https://t.co/PjOM6BEA6G https://t.co/WsPrryOPRP https://t.co/ItiZ5iyu1q https://t.co/Qi84HMuQAG https://t.co/FyWtgRKpHL

Sep 17, 2021 · 414 followers View post →
Manu_K_talà ✌️
@Manu_K_tala · X

RT @RicardoAlvarezC: @miguelmazoz53 Muy buena pregunta! R:todos los datos estadísticos están basados en PCR’s q NO SON DIAGNÓSTICOS y dan…

Sep 15, 2021 · 4 shares · 5,354 followers View post →
Ricardo Alvarez
@RicardoAlvarezC · X

@miguelmazoz53 Muy buena pregunta! R:todos los datos estadísticos están basados en PCR’s q NO SON DIAGNÓSTICOS y dan 97% FALSOS POSITIVOS hecho incluso admitido xFDA Efectos adversos inyección se considera q VAERS solo capta del 2-3%,así q fácilmente van 150millones https://t.co/hslR4zMYK8 https://t.co/t3SkTdUIAw

Sep 15, 2021 · 11 likes · 4 shares · 11,104 followers View post →
Lindsey
@whiterose_lady · X

@pablo_beee @BadcrumbleRJH @SteveHu39112632 @LBC @TomSwarbrick1 No im not saying it. The science and data says it. False negative reports of less than 10%. https://t.co/uQPkIwoPvJ

Sep 14, 2021 · 371 followers View post →
ArEs
@ArifArifArif71 · X

@SELCUKDMKY @FBLi1907lim @SntMSM Bilimadamlari https://t.co/N6Svja1puH

Sep 13, 2021 · 498 followers View post →
群馬のクマ(別名サヨクマ)
@kumasannda · X

偽陽性がそれほど多いなら、世界にはそれなりの論文が発表されている筈だと思い探してみるが一向に見つからない(偽陰性については少ないがいくつか存在する)。 https://t.co/2y6g7mMBRb ※この論文では特異度100%を仮定している

Sep 7, 2021 · 1,772 followers View post →
O Z L E M Y I L H A N¹⁹⁰⁷⚽️
@OzlemYilhan · X

RT @virusfantom: Linki tazeliyorum https://t.co/rmJTb2ynzt

Sep 6, 2021 · 2 shares · 1,163 followers View post →
Betül Kırdar
@BetulKirdar · X

RT @virusfantom: Linki tazeliyorum https://t.co/rmJTb2ynzt

Sep 6, 2021 · 2 shares · 105 followers View post →
Semih Tareen
@virusfantom · X

Linki tazeliyorum https://t.co/rmJTb2ynzt

Sep 6, 2021 · 39 likes · 2 shares · 149,985 followers View post →
Semih Tareen
@virusfantom · X

@self_adjoint https://t.co/rmJTb2ynzt

Sep 6, 2021 · 2 likes · 149,985 followers View post →
Pino Quintaliani
@Pqr9ap · X

salivary swab.   –  False negative rate of COVID-19 PCR testing: a discordant testing analysis | Virology Journal | https://t.co/cW0j9AUoSM

Sep 5, 2021 · 1 like · 324 followers View post →
James Rowe
@BearlyJames · X

@watkinson137 @mattdowse @PoliticsPollss Name one other test that’s 100% accurate Stuart. A test was done where 95k patients with 100,000 samples were tested and 49 patients had false positives. It’s crazy how accessible information from qualified virologists is: https://t.co/eBfoOdKoOQ

Aug 26, 2021 · 30 followers View post →
Patriot WJ
@wjack76995 · X

@JohnBee888 @barryjohnreid21 @JSAHolmes @Alex_on_A14 @BrowningNeelyn @ghoppe @TierraHenson @MdRisette @pawley_robert @trpdo @ADreyzen @KayVonPaul @RodFair2 @Will_holliday1 @NateWeymouth @FineAndBrennan @BurgerLab12 @andylumm @carlsmythe @ItsAllLies1 @mcfunny @RTheatheist @BioVisionary @ChrisJohnsonMD @DEKKplans @KAMasse81 @jamesgordon4th @nyob7714 @DontMes70957787 @Jenni86587557 @SassyGirlD1 @SaltaoVladimir @Bebert701 @WendyOrent @jhan2qt @Nycweatherrepor @Michell69397997 @lizditz @TakeThatCDC @Dkingnbearjavi @markmcdougall13 @thatsnotmine125 @florida_reb @ginapro @fredwibblington @airbagandme @UKCryptoKing247 @Kathmarval @swedishchf https://t.co/c4uTb4HAeb

Aug 25, 2021 · 1 like · 2,409 followers View post →
VaccineMole
@VaccineMole · X

@ezana_negus @Joe_Sarkadi @IvoryHecker No, not all, only some that are still ignorant about PCR tests, wish has lots of false negative/positive results & that covid vaccines are the greatest deception on earth PCR: https://t.co/p7enknRayh Vaccines https://t.co/aRDKkxCI7u https://t.co/vBxcyGaV3M https://t.co/gl7PS9RbOH

Aug 21, 2021 · 18,355 followers View post →
Ian is 1453 days w/o a covid incident and counting
@ianwrob · X

@AbundantLandUse @ljfawkes It's what, 5 per 10000 tests false negative? https://t.co/CdTWbAYJ8B

Aug 21, 2021 · 1 like · 1,708 followers View post →
Clem-Here for the Kakistocracy -Kadiddlehopper
@ClemSkelton · X

@not_sellin @GlenKorstrom It's not inconsistent, there are known deficiencies with false negatives. Other than that there's a half percent error rate. https://t.co/7ThGeg2BbK

Aug 21, 2021 · 817 followers View post →
Prove It
@less_govt · X

https://t.co/dLFvsnBbpI

Aug 19, 2021 · 964 followers View post →
Dr Pratima Sharma
@devrupa_ni · X

False negative rate of COVID-19 PCR testing: a discordant testing analysis https://t.co/e7HsZYlcLR

May 28, 2021 · 28 followers View post →
gosia p
@gosia_poplawska · X

https://t.co/j50Z2oUEv0 *also, RT are 80% sensitive and 99% a person without a virus will get a negative PCR based on this https://t.co/7xlvUvTthd

Mar 30, 2021 · 19 followers View post →
Molecular Diagnostics Papers
@diag_papers · X

False negative rate of COVID-19 PCR testing: a discordant testing analysis. https://t.co/cl10jw0CWz https://t.co/g5QmmVBU0L

Jan 29, 2021 · 189 followers View post →
Justin Chen
@IDdocChen · X

RT @UofA_ID: False negative rate of COVID-19 PCR testing: a discordant testing analysis Congratulations @KanjiJamil et al https://t.co/2…

Jan 17, 2021 · 3 shares · 345 followers View post →
Michael Mengel
@mmengelUofA · X

RT @UofA_ID: False negative rate of COVID-19 PCR testing: a discordant testing analysis Congratulations @KanjiJamil et al https://t.co/2…

Jan 10, 2021 · 3 shares · 626 followers View post →
Virology Tweets
@VirologyJ · X

False negative rate of COVID-19 PCR testing: a discordant testing analysis https://t.co/j1QYa6CkRg

Jan 9, 2021 · 5 likes · 9,697 followers View post →
Karen Doucette
@doucette_ked1 · X

RT @UofA_ID: False negative rate of COVID-19 PCR testing: a discordant testing analysis Congratulations @KanjiJamil et al https://t.co/2…

Jan 9, 2021 · 3 shares · 576 followers View post →
UofA Infectious Diseases
@UofA_ID · X

False negative rate of COVID-19 PCR testing: a discordant testing analysis Congratulations @KanjiJamil et al https://t.co/2XjyF4CIWP

Jan 9, 2021 · 10 likes · 3 shares · 2,048 followers View post →
A Comprehensive Review On Current COVID 19 Detection Method ...
News

... 10.1186/ [23] R.K. Williams, G.S. Jiang, K.V. Holmes, Receptor for mouse hepatitis virus is a s12985-021-01489-0. member of the carcinoembryonic antigen ...

Dec 21, 2025 View →
42UlusalRadyolojiKongresi 2021press2 | PDF
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doi:10.1186/s12985-021-01489-0 7. Ye Z et al.(2020) Chest CT manifestations of new coronavirus disease 2019 (COVID-19): a pictorial review. Eur Radiol 30 (8): ...

Dec 21, 2025 View →
Enhancing Protein Coated Drug Delivery and Their Preparation ...
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https://doi.org/ 10.1186/S12985-021-01489-0. Biosens. Bioelectron. 141, 111398. [233]. Kaushik, A.K., Dhau, J.S., Gohel, H., Mishra, Y.K., https ...

Nov 29, 2023 View →
chest congestion update, went to urgent care : r/Asthma
Reddit

No test result is absolute gospel. For PCR tests false negatives: https://virologyj.biomedcentral.com/articles/10.1186/s12985-021-01489-0.

Oct 2, 2022 View →
rinta tukossa päivitys, kävin päivystyksessä : r/Asthma - Reddit
Reddit

https://virologyj.biomedcentral.com/articles/10.1186/s12985-021-01489-0 · https://pubmed.ncbi.nlm.nih.gov/35402162/. Tässä on meta-tutkimuksen ...

Oct 2, 2022 View →
Göğüs tıkanıklığı güncellemesi, acil servise gittim : r/Asthma - Reddit
Reddit

https://virologyj.biomedcentral.com/articles/10.1186/s12985-021-01489-0 · https://pubmed.ncbi.nlm.nih.gov/35402162/. İşte bir meta-çalışmanın ...

Oct 2, 2022 View →
Is our PCR testing flawed? : r/Winnipeg - Reddit
Reddit

https://virologyj.biomedcentral.com/articles/10.1186/s12985-021-01489-0. Seems to say that PCR tests (at least, as done in the study) give ...

Dec 31, 2021 View →
At what rate do PCR tests return false negatives, and should one get ...
Reddit

... 10.1186/s12985-021-01489-0). Is there any growing consensus on what exactly the rate of false negatives is? For context, I had my second ...

Sep 23, 2021 View →
Just after celebrating a doughnut day, Victorian officials say they're ...
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com/articles/10.1186/s12985-021-01489-0. virologyj.biomedcentral.com. False negative rate of COVID-19 PCR testing: a discordant testing. 4 yrs.

Aug 3, 2021 View →
Tip for getting a toddler through Covid testing (hope you don't need it ...
Reddit

https://virologyj.biomedcentral.com/articles/10.1186/s12985-021-01489-0. Keep in mind we are talking about testing kids that aren't suspected ...

Jul 21, 2021 View →
Küçük bir çocuğu Covid testinden geçirmenin ipucu (umarım ...
Reddit

https://virologyj.biomedcentral.com/articles/10.1186/s12985-021-01489-0. Unutmayın, covid'i olduğundan şüphelenilmeyen ama güvenli olmak için ...

Jul 21, 2021 View →
What caused the jump in COVID-19 cases and testing? - Facebook
Facebook

com/articles/10.1186/s12985-021-01489-0 ) So let's take the current positivity rate of . 44% if you test about 29,000 you get about 126. If ...

Jun 27, 2021 View →
Communication the game changer for Tokyo Olympics: ex-IOC ...
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https://virologyj.biomedcentral.com/articles/10.1186/s12985-021-01489-0. Between 17% - 30%....dependent on how the modeling is analyzed. 1( + ...

Jun 7, 2021 View →
Testing will soon be commonplace in Singapore's new normal. It's a ...
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com/articles/10.1186/s12985-021-01489-0. virologyj.biomedcentral.com. False negative rate of COVID-19 PCR testing: a discordant testing. 4 yrs ...

Jun 7, 2021 View →