PTT

Abbreviation Patient Preparation

Partial thromboplastin time: a coagulation test, drawn in a light blue-top sodium citrate tube, commonly ordered to follow heparin therapy.

Sources

• Partial Thromboplastin Time (PTT) Test (MedlinePlus Medical Test) · U.S. National Library of Medicine (MedlinePlus)
• Order of Blood Draw Tubes and Additives (CLSI blog summary of GP41, Collection of Diagnostic Venous Blood Specimens; GP41-Ed7 was replaced by CLSI PRE02-Ed8, 2025) · Clinical and Laboratory Standards Institute

Related terms

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