A 30yo lady has epistaxis for 30mins. Her Hgb is normal, MCV normal, WBC normal,
PT/APTT/Bleeding time are normal. Where is the defect?
a. Plts
b. Coagulation factor
c. Sepsis
d. Anatomical
e. RBC
Answer: A
Everything is given except for platelet count, as this would likely give the answer away. In ITP the only labortatory abnormality is low platelets and the disease is due to antibodies destroying platelets.
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