The evaluation of platelet function disorder begins with a history and physical exam.

Physical findings in someone with a platelet function disorder may include:

• Rash:
• Looks like broken blood vessels under the skin
• Easy bruising from minor injuries
• Easy bruising without known injury
• Easy bleeding
• Bleeding gums
• Nosebleeds

Tests that may be used to evaluate a platelet function disorder include:

• Bleeding time
• Complete blood count
• Fibrinogen level
• Fibrin split products
• Hageman factor assay
• Factor 5 level
• Factor 7 level
• Factor 8 level
• Factor 10 level
• INR
• Partial thromboplastin time (PTT)
• Platelet count
• Protime (PT)
• Liver profile
• Bone marrow biopsy