This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Bacteria, Subject name: Microbiology
Most sensitive test for diagnosing asymptomatic chlamydia infection is: 
Select and explain. 
A. Tissue culture, B. Nucleic acid amplification, C. Serology, D. Serum electrophoresis
B: Nucleic acid amplification
Answer: B: Nucleic acid amplification 
Explanation: Ans. is 'b' i.e., Nucleic acid amplificationRef: Harrison, 19th/e, p. 1165 and Ananthanarayan, 9th/e, p. 415NAAT (Nucleic acid amplification test) - PCR, LCR (Ligase Chain Reaction).Most sensitive test in cervical C. trachomatis.