AIHA Laboratory Accreditation Programs, LLC is a third-party, internationally-recognized accreditation body.

Our accreditation programs include: industrial hygiene, food, environmental lead, environmental microbiology, and unique scopes. Accreditation is granted to any laboratory satisfying AIHA LAP, LLC requirements for accreditation. AIHA LAP, LLC is proud to be a full member of the International Laboratory Accreditation Cooperation (ILAC) and a signatory of the ILAC Mutual Recognition Arrangement (MRA).​

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Important Announcement

NIOSH is soliciting feedback on the 5th edition of the NIOSH Manual of Analytical Methods (NMAM.) Survey results will be used to improve NMAM methods and on future method development. The survey, which is anonymous, will also help NIOSH improve its website content and features. To participate, please go to

https://orausurvey.orau.org/n/NMAM.aspx