Which lab studies are indicated in the workup of central retinal artery occlusion (CRAO)?

Updated: Jun 11, 2019
  • Author: Robert H Graham, MD; Chief Editor: Andrew G Lee, MD  more...
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Laboratory studies may be helpful in determining the etiology of CRAO, as follows:

  • Complete blood count (CBC) (eg, anemia, leukemia, polycythemia, platelet disorders)
  • Erythrocyte sedimentation rate (ESR) evaluation for giant cell arteritis in elderly patients
  • Hypercoagulable state evaluation (eg, factor V Leiden, prothrombin mutation, homocysteine levels, fibrinogen, antiphospholipid antibodies, prothrombin time/activated partial thromboplastin time [PT/aPTT], serum protein electrophoresis, among others)
  • Fasting blood sugar, cholesterol, triglycerides, and lipid panel to evaluate for atherosclerotic disease
  • Blood cultures to evaluate for suspected bacterial endocarditis and septic emboli

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