Is there any correlation between mRNA vaccines and the development of white clots? No, that's not true: Research indicates that postmortem white clots, a natural phenomenon in the human body, have been observed for an extended period, predating the development of mRNA vaccines.
The claim appeared in a video (archived here) on TikTok posted by @pak_pinn on February 27, 2024, with the caption (translated from Thai to English by Lead Stories staff) that reads:
Is a white clot that is caused by mRNA vaccine similar to saddle blood?
This is what the post looked like on TikTok at the time of writing:
(Source: TikTok screenshot taken on Mon Mar 4 10:45:04 2024 UTC)
The widely circulated claim (archived here) suggests the discovery of a unique white clot within the human body. This clot, described as resembling a tentacle, was reportedly found in the carotid arteries of individuals either near death or deceased. Allegedly, these individuals had a common denominator: They had all received mRNA vaccines. This comes after Dr. Thiravat Hemachudha, a physician in Thailand, asserted that such clots had not been previously documented in humans and attributed their presence to the administration of mRNA vaccines.
The National Vaccine Institute refuted this claim on February 21, 2024 (archived here), stating that the mRNA vaccine is not linked to white clots. They clarified that these white clots are postmortem blood clots, a natural occurrence in deceased bodies. When circulation ceases, red blood cells settle from plasma due to gravity, and fibrinogen in the blood naturally coagulates, forming white fibrin clots.
Extensive research (archived here) has been conducted on fibrin clots. Researchers have presented images of fibrin clots in tubes following centrifugation, and it has been documented in numerous cases predating the pandemic.
The Centers for Disease Control and Prevention (CDC) states that clotting is a rare adverse effect of mRNA vaccines (archived here).
Lead Stories has consistently debunked misinformation regarding mRNA vaccine side effects, including blood clots here.
