A 15-year old female presents to her pediatrician complaining of blood in her urine. She is otherwise healthy, with the exception of a sore throat approximately 2 weeks before. Review of systems is notable only for swollen ankles, which she denies having experienced before. On physical exam, her blood pressure is 145/85 and she has 1+ lower leg edema bilaterally. What serum study is most likely to be elevated?
A. Amyloid
B. Anti-glomerular basement membrane
C. Anti-streptolysin O
D. Complement
E. Immunoglobulin A
A. Amyloid
B. Anti-glomerular basement membrane
C. Anti-streptolysin O
D. Complement
E. Immunoglobulin A