Chlaymydia in asymptomatic carriers, the most sensitive test is -: (A) Tissue culture, (B) Nucleic acid amplification test, (C) Serology, (D) Serum electrophoresis
Answer is B. Ans. is 'b' i.e., Nucleic acid amplification test . Recently Nucleic acid amplification tests (NAAT), have'been developed for chlamydial infections. . These tests are well suited for screening ( asymptomatic carriers) as well as diagnosis. . These tests are the most sensitive and specific chlamydial diagnostic methods available, they are also the most expensive. . The tests are ? - Polymerase chain reaction (PCR) - Ligase chain reaction ( LCR) - Transcription mediated amplification (TCR) - DNA strand displacement amplification (SDA)