Prothrombin Time
- Sample Type
- Standard
- Fasting
- No
- Unit
- seconds
Prothrombin Time (PT) measures the time it takes for blood to clot via the extrinsic and common pathways of the coagulation cascade. In a COVID Panel, PT is used to screen for coagulopathy and Disseminated Intravascular Coagulation (DIC), which are common complications in severe viral infections. It primarily assesses factors I, II, V, VII, and X.
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Check Your Result
Enter your lab result to see where you stand compared to the standard reference range.
Why Context Matters
Results can be influenced by diet (high Vitamin K intake like spinach/kale), certain antibiotics that alter gut flora, and liver health, as clotting factors are synthesized in the liver. Variations in lab reagents (thromboplastin) also require the use of INR for standardization.
Lab ranges are statistical averages, not biological laws. "Normal" for a 20-year-old male isn't normal for a 60-year-old female.
Clinical References
Source-of-truth databases and clinical guidelines for Prothrombin Time:
Official Sources
Research & Guidelines
- PubMed: Prothrombin Time Clinical GuidelinesNCBI / PubMed
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Medically Reviewed by Dr. Binoy Babu, MBBS
Board Certified Doctor • 10+ Years Clinical Experience
Dr. Babu is a practicing physician dedicated to empowering patients with clear, actionable medical information. He founded 2opi to bridge the gap between complex lab reports and patient understanding, ensuring everyone has access to a reliable second opinion.
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