Skip to main content

Table 6 Comparison of action/alert levels using quantitative PCR (qPCR) and culture for Legionella spp

From: Comparing methods of determining Legionella spp. in complex water matrices

    qPCR no.
    Action Alert Satisfactory Total
Legionellaspp Hot/cold sanitary ≥10 5 GU l −1 ≥10 4 GU l −1 < 10 4 GU l −1  
   Cooling towers ≥10 6 GU l −1 ≥10 5 GU l −1 < 10 5 GU l −1  
  Action ≥104 CFU l−1 0 0 0 0
Culture no. Alert ≥103 CFU l−1 0 0 3 3
  Satisfactory <103 CFU l−1 0 1 61 62
  Total   0 1 64 65