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 | ||