United States

AIHA Proficiency Analytical Testing Programs, LLC
(EMPAT – Fungal- Cultural, EMPAT – Fungal- Direct Exam, EMPAT – Bacterial- Culturable)
Angela Oler: 703-846-0757

Wisconsin State Laboratory of Hygiene
(ELITE Legionella only)​
800-462-5261
PTService@slh.wisc.edu

NSI Lab Solutions
(limited acceptability - see Scope/PT Table​​)
919-789-3000
nsi@nsilabsolutions.comUnited Kingdom

LGC Standards Proficiency Testing
(LGC Standards for Legionella)
LGC Standards Proficiency Testing
+44 (0) 161 762 2500
customerservices@lgcpt.com

Public Health England
Food and Environmental Proficiency Testing Unit (FEPTU)
+44 20 8327 7122
foodeqa@phe.gov.uk