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Table 1 Specimen collection by study timeline.

From: A cohort study of Chlamydia trachomatis treatment failure in women: a study protocol

Specimen collection and testing           If PCR positive @ d28, 42 or 56
Day 0d 7 14 21 28 35 42 49 56  
Number of swabs collected 4 2 2 2 2 2 2 2 2 4-5
Culture X          X
PCRa X X X X   X   X   X
Chlamydia organism loada X X X X X X X X X X
Genotypea X X X X X X X X X X
Sequencinga X X X X X X X X X X
Y-chromosomea   X X X X X X X X X
β-globina X X X X X X X X X X
Test of cureb      X   X   X  
Az absorptiona   X         
Blood X          X
Rectal swabc           X
Location Clinice Clinice Homef Homef Homef Homef Homef Homef Homef Clinice
  1. aProcessed in batches throughout the course of the study.
  2. bChlamydia PCR done in real time to report results back to participants and treat any women diagnosed chlamydia positive.
  3. cIf anal sex reported.
  4. dDay 0 = baseline or at time of recruitment.
  5. eSwabs collected by research nurse and put immediately into the appropriate medium.
  6. fSelf-collected high-vaginal swabs.
  7. Key: X = specimen processed for this experiment, PCR polymerase chain reaction, Az absorption azithromycin absorption, d day.