This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Kidney, Subject name: Medicine
Afeature of Renal Vascultitis in children is - 
Select and explain. 
A. IgA raised, B. Antinuclear antibody in serum, C. Low completment level, D. Cytoplasmic antinuclear antibody
A: IgA raised
Answer: A: IgA raised 
Explanation: In the kidney, IgA vasculitis (Henoch Schonlein purpura) is characterized by IgA deposits in a pa of the glomerulus where blood is filtered. These may range from increased cells in the filtering area, increase in white blood cells, and abnormal cell growth in some pas of the filter. Ref Harrison20th edition pg 288