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: Orthopaedics
[{'content': 'A specific test for gout is - \nSelect and explain. \nA. Raised serum uric acid level, B. Raised uric acid in synovial fluid of joint, C. Raised urea level, D. Raised urease enzyme level', 'role': 'user'}, {'content': 'Answer: B \nExplanation: Demonstration of intracellular monosodium urate crystals (MSU) in synovial fluid from affected joint is diagnostic of gout.', 'role': 'assistant'}]