Legionella

  • Accredited by CDC ELITE, New York ELAP, AIHA-LAP LLC
  • Lab open on Saturdays
  • Gold standard culture method (ISO11731:2017)
  • Use of selective and non-selective media
  • Direct plating and concentration by filtration
  • Sample pre-treatment with heat and acid
  • Rapid identification of Legionella species by MALDI-TOF mass spectrometry
  • Serogrouping of L. pneumophila as serogroup 1 or 2-14
  • Free collection bottles and swabs

Legionella testing is increasingly recognized as an important part of a water management program for both potable and non-potable water systems. New York, ASHRAE, and Centers for Medicare & Medicaid Services mandate or recommend testing to validate the water management program and to monitor its effectiveness.

 

Water Type Samples
(Test Code = LEG)
Sample Type Analytical Sensitivity (CFU/mL) Turn-Around Time (days)
Potable Faucet, shower head, hot water tank, ice machines/dispensers, drinking fountain, eye wash Liquid <1 7 days for final report; preliminary notification of all positive results
Swab 10
Nonpotable Cooling tower, evaporative condenser, decorative fountain, whirlpool, spa, swimming pool Liquid 10
Swab 10
Industrial Metal working fluid Liquid 10

Samples submitted for Legionella may also be analyzed for heterotrophic plate count (HPC).

Test Code Analysis Samples Turn-Around Time (days)
HPC Heterotrophic Plate Count As above for Legionella 5
IDS Legionella Species Identification BCYE slant or plate with suspected Legionella growth 2

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