The spike protein made by the body after an mRNA vaccine might stay in the blood for over half a year, much longer than doctors first expected.
Evidence from Studies
Supporting (1)
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The study looks at how long the spike protein from mRNA vaccines stays in the blood and finds it can last for several months, which supports the claim.
Contradicting (0)
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Score Breakdown
No multi-axis breakdown available yet. The overall Pro / Against score above is the best signal.
- No clinical evidence is available; the score reflects mechanistic plausibility only.
What Would Prove This
Per GRADE and EBM methodology, here is what ideal scientific evidence would look like to definitively prove or disprove this claim, ordered from strongest to weakest.
Determine the half-life and clearance kinetics of spike protein in circulation over time.
A longitudinal cohort study of 300 vaccinated adults aged 18–70, with blood draws at 0, 7, 14, 30, 60, 90, 120, 150, and 180 days post-vaccination, analyzing plasma for full-length and fragmented spike protein using high-sensitivity mass spectrometry and immunoassays, adjusting for age, sex, vaccine type, and comorbidities.
Estimate prevalence of circulating spike protein at different time points post-vaccination.
A cross-sectional study measuring spike protein in blood samples from 1,000 individuals grouped by time since last mRNA vaccine dose (e.g., 0–30, 31–60, 61–120, 121–180, >180 days), using standardized LC-MS/MS protocols with blinded analysis.
Interpret and contextualize findings from primary studies on spike protein persistence.
A narrative review summarizing all available data on spike protein detection in biological fluids post-vaccination, such as the current paper.