Table 1

Summary of workers who had negative SIC tests to chlorine-releasing tablets

WorkerPEF scoresBaseline FEV1% predictedNSBRFENOSICChallenge test outcomes
Control agentAgent 2Agent 3
1Oasys: 2.75
ABC: 27
Rest work: 4.2%
1 timepoint
85%>4800 µg pre and postNDGloss Xpress plus (alcohol based)Chlorine-releasing tabletsViro-Sol (containing limonene)Mild tight chest and cough. Maximum FEV1 decline with chlorine-releasing tablets: 10.6% (dual reaction)
2Oasys: 3.15
ABC: 18
Rest work: 4.3%
4 timepoints
57%>4800 µg pre and postNDNeutral detergentChlorine-releasing tabletsCarpet freshenerNasal irritation and slight chest tightness. Maximum FEV1 decline with chlorine-releasing tablets: 11.3% (immediate reaction)
3Oasys: 2.75
ABC: 30
Rest work: 7.6%
Inadequate for timepoint
135%>4800 µg
pre and post
Pre: 12 ppb
Post: 16 ppb
Neutral detergentChlorine-releasing tabletsNDTightness in throat and voice change. Maximum FEV1 decline with chlorine-releasing tablets: 5.08% (immediate reaction)
  • ABC, area between curves score; ND, not done; NSBR, non-specific bronchial reactivity using the Yan method (normal >2000 μg); PEF, peak expiratory flow; SIC, specific inhalation challenge.