Subconjunctival Hemorrhage Laboratory Testing



 Laboratory testing may be directed toward identifying blood dyscrasias, clotting disorders and other hematological abnormalities. Suggested testing may include (but is not limited to) the following: 

  • Complete blood count with platelets (CBC with differential and platelets)

  • CMB - comprehensive metabolic panel

  • Prothrombin time (PT)

  • Activated partial thromboplastin time (PTT)

  • Activated partial thromboplastin time (APTT) 

  • An international ratio (INR) to rule out over-anticoagulation in patients taking blood thinners

  • Antiphospholipid antibodies

  • Homocysteine level, particularly in young men

  • Assay for natural anticoagulants such as protein S and protein C, antithrombin III, factor V Leiden

  • Beta-glycoprotein

  • HIV Virus titers

  • Anticoagulation panel for lupus if suspected autoimmune condition

  • Sjogren’s testing panel

  • If African American, sickle cell panel

  • Patients taking warfarin (Coumadin, Bristol-Myers Squibb) or dabigatran (Pradaxa, Boehringer Ingelheim Pharmaceuticals) or aspirin should obtain international normalized ratio (INR) values to determine if therapy needs to be adjusted


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