Contract Testing Laboratories of America

Contract Testing Laboratories of America (CTLA) is an ISO/IEC 17025:2017 accredited laboratory specializing in dietary supplement, food, and cosmetics testing. CTLA's accreditation is through Perry Johnson Laboratory Accreditation, Inc. (PJLA). The laboratory offers comprehensive testing services including microbiology, identity testing, heavy metals and mineral analysis (ICP), vitamin testing, stability studies, preservation efficacy testing, allergen testing, protein and amino acid analysis, weight variance testing, and surface ATP testing. All testing follows FDA requirements under 21 CFR Part 111 and the Dietary Supplement Health and Education Act (DSHEA). CTLA publishes extensive educational resources on dietary supplement testing requirements, certificates of analysis (COA), and FDA compliance.