Plain-English translation of NCT06311435 on ClinicalTrials.gov ↗ · Source last updated · Translation generated · How we translate trials
This study doesn't follow the usual testing phases — it may be an observational study or a different type of research.
Researchers are trying to develop a new blood test that can reliably identify Long COVID and determine how severe it is. Right now, there's no single test doctors can use to diagnose Long COVID, so this study is collecting blood samples from people with different types of Long COVID symptoms — as well as from people who had COVID-19 but didn't develop Long COVID — to train an artificial intelligence system to recognize the disease.
Many people continue to experience serious symptoms months or years after COVID-19 infection, but doctors currently have no reliable blood test to diagnose Long COVID or understand its severity. This study aims to create that diagnostic tool so patients can get answers and proper treatment.
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You will have two blood draws taken about 28 days apart. Before or during your visits, you'll complete surveys about your medical history and ethnic background, and answer questions about your symptoms to help researchers understand what type of Long COVID symptoms you're experiencing. The blood samples will be sent to the research team, who will use them to develop and test the new diagnostic blood test.
AI-generated summary from trial data · Jun 15, 2026 · Not medical advice
United States