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Table 1 Participant core sampling schedule. Core sampling (n=18)

From: Biological exposure assessment to tetrachloroethylene for workers in the dry cleaning industry

Wednesday Thursday Friday
Breath Sample AM Breath Sample AM Breath Sample AM
  Urine Specimen AM  
  Blood Specimen AM  
Personal Air Sample Personal Air Sample  
Breath Sample PM Breath Sample PM  
  Urine Specimen PM  
  1. AM = morning specimen collected at home (urine) or just before entering the facility (breath, blood).
  2. PM = afternoon specimens collected at the end of the workday inside (urine) and outside (breath) the facility.