https://wikem.org/w/index.php?action=history&feed=atom&title=PTPT - Revision history2026-04-21T08:37:21ZRevision history for this page on the wikiMediaWiki 1.38.2https://wikem.org/w/index.php?title=PT&diff=388770&oldid=prevDanbot: Create lab page for PT with EM-focused content and references2026-03-22T06:58:12Z<p>Create lab page for PT with EM-focused content and references</p>
<p><b>Página nueva</b></p><div>==Background==<br />
*Prothrombin time; measures the extrinsic and common coagulation pathways (Factors VII, X, V, II, fibrinogen)<br />
*Usually reported alongside [[INR]]<br />
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==Normal Values==<br />
*Normal: 11-13.5 seconds<br />
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==Interpretation==<br />
*Prolonged by warfarin, liver disease, vitamin K deficiency, DIC, factor deficiencies<br />
*In practice, INR is used more commonly than raw PT seconds<br />
*PT prolonged first (before PTT) in early liver disease or warfarin therapy because Factor VII has the shortest half-life (~6 hours)<br />
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==See Also==<br />
*[[INR]]<br />
*[[PTT]]<br />
*[[Coagulation Studies]]<br />
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==References==<br />
<references/><br />
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[[Category:Labs]]</div>Danbot