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Journal of Clinical Microbiology, 08 1995, 2042-2047, Vol 33, No. 8
GJ van Doornum, M Buimer, M Prins, CJ Henquet, RA Coutinho, PK Plier, S Tomazic- Allen, H Hu and H Lee
The suitability of urine specimens from women and men for the detection of
Chlamydia trachomatis infection by a ligase chain reaction (LCR)- based
assay with plasmid primers was examined with a group of patients attending
a sexually transmitted disease clinic in Amsterdam, The Netherlands.
Cervical specimens from 15 of 237 (6.3%) women tested positive for C.
trachomatis by cell culture. Of the 25 (10.5%) female urine samples that
tested positive by the plasmid-LCR assay, 13 were obtained from cervical
culture-positive women. Nine of the 12 plasmid- LCR-positive urine samples
from cervical culture-negative women were confirmed to be positive by a
second LCR assay with primers based on chromosomal DNA. Urethral specimens
from 24 of 258 (9.3%) men were positive for C. trachomatis infection by
cell culture. Of the 25 (9.7%) urine samples that tested positive by
plasmid-LCR, 20 were from culture- positive men. All five of the
LCR-positive urine samples from culture- negative men were confirmed to be
positive by the LCR with chromosomal DNA primers. Relative to cell culture,
testing by plasmid-LCR analysis of male urine samples had a sensitivity of
83.3% and a specificity of 97.9%; after resolution of discordant samples,
these values were 86.2 and 100%, respectively. In the study with women, the
sensitivities of plasmid-LCR analysis of cervical and urine specimens in
comparison with cervical cell culture were 93.3 and 86.7%, respectively.
After resolution of discrepant samples, the sensitivities of the
plasmid-LCR test for cervical swabs and female urine samples were 96.3 and
92.6%, respectively.(ABSTRACT TRUNCATED AT 250 WORDS)
Copyright © 1995 by the American Society for Microbiology. All rights reserved.
Detection of Chlamydia trachomatis infection in urine samples from men and women by ligase chain reaction
Department of Public Health, Municipal Health Service of Amsterdam, The Netherlands.
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