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Pilot Study of COBAS PCR and Ligase Chain Reaction for Detection of Rectal Infections Due to Chlamydia trachomatis

ABSTRACT We tested rectal specimens from men who have sex with men for Chlamydia trachomatis by using COBAS PCR (Roche Diagnostics) and ligase chain reaction LCR (Abbott laboratories) and compared three PCR specimen-processing procedures. Chlamydiae were detected by one or more procedures in 22 of 186 specimens. All three PCR tests were positive for 17 specimens, all of which also tested positive by LCR.