This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Which of the following is not a characteristic finding in Henoch Schonlein Purpura? 
Select and explain. 
A. Palpable purpura, B. Nephritis, C. Thrombocytopenia, D. Abdominal pain
C: Thrombocytopenia
Answer: C: Thrombocytopenia 
Explanation: Henoch Schonlein Purpura is a small vessel vasculitis characterized by palpable purpura, ahralgia, gastrointestinal signs and symptoms and glomerulonephritis. Patients have a normal platelet count, other laboratory findings includes mild leukocytosis, occasional eosinophilia, normal serum complement and elevated IgA. Reference: Harrison's Principles of Internal Medicine 18th edition, chapter 326.