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Coagulation

Coagulation, also known as clotting, is the process in which blood will change forms from liquid to gel, and will prohibit excessive bleeding when you injure yourself. The blood that is running through your veins, on the contrary, should not clot. If these clots reach your heart, lungs, or brain; the result could be fatal. Common tests used to detect clots are the Prothrombin Time (PT) w/INR, the D-Dimer Blood Test, and the Fibrinogen Activity Blood Test. Thank you for browsing our selection of Coagulation blood tests and panels. Shop additional Blood Disorder Tests confidentially and order online without insurance or a doctor's note.

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Walk-In Lab is contracted with LabCorp (LC) and Quest Diagnostics (QD) for routine lab testing. Please choose LC or QD to complete your order. If you prefer to receive a kit by mail for specimen collection, please see our Home Test Kits. LC and QD tests must be ordered separately.

LabCorp: Online lab testing is prohibited in MA, MD, NY, NJ and RI.

Quest Diagnostics: Online lab testing is prohibited in NY, NJ and RI.

  • Vitamin K1 Blood Test

    This Vitamin K1 Test measures Vitamin K1, the natural form of vitamin K, levels in the blood.
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  • Partial Thromboplastin Time Blood Test, Activated

    A PPT Test is useful in detecting deficiencies or inhibitors to the intrinsic (Factors VIII, IX, XI, and XII) and common (Factors II, V, X, and fibrinogen) pathway coagulation factors.
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  • Factor VIII Activity Blood Test, Clotting

    A Factor VIII Activity Blood Test is useful in measuring the activity of factor VIII, a blood-clotting protein. 
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  • Antithrombin III Antigen Blood Test

    An Antithrombin III Antigen Blood Test is used to help investigate the cause of recurrent inappropriate blood clotting or to help diagnose an antithrombin deficiency.
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  • Factor V Leiden Mutation Analysis Blood Test

    This Factor V Leiden Mutation Analysis Blood Test is used to detect Leiden (R506Q) mutation in factor V gene (OMIM 227400), causing an increased risk of thrombosis.
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  • Prothrombin Time (PT) w/INR and Partial Thromboplast...

    The prothrombin time (PT) w/INR test measures the length of time it takes for a blood clot to form in a sample of blood. Partial Thromboplastin Time (PTT) test is ordered when someone has unexplained bleeding or clotting. The PTT test is usually used as a starting place when investigating the cause of a bleeding or thrombotic episode.
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  • Prothrombin Time (PT) w/INR Blood Test

    The PT/INR Blood Test reports both PT and INR values, although the INR value is more applicable for patients on Warfarin; it is used to adjust dosage to get the PT in the appropriate range.
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  • D-Dimer Blood Test

    A D-Dimer Blood Test rules out deep vein thrombosis (DVT) and pulmonary embolism; evaluate disseminated intravascular coagulation; can be used to monitor the extent of clot lysis during thrombolytic therapy.
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