Contract Testing Laboratories of America
Lab testing supplements for microbiology, identity, heavy metals, vitamins and allergens.
- LEAD TIME
- Not publicly disclosed
Overview
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.
Certifications
0 of 1 certification independently confirmed. What this means
Capabilities
- PRODUCT TYPES
- Microbiology Testing · Identity Testing · Heavy Metal Analysis · Vitamin Testing · Stability Studies
- CAPABILITIES
- Identity testing · Heavy metals, pesticides, allergens or other contaminants · Microbiology testing · Stability (shelf-life) studies · Regulatory consulting or audits
Sources
- CTLA - Official Website(2026-03-26)
- CTLA - ISO/IEC 17025:2017 Accreditation(2026-03-26)
- CTLA - Dietary Supplement Testing(2026-03-26)
What we couldn't verify
We did not visit this company on site. See the limits that apply to every listing.
- ISO 17025 accreditation through PJLA (less widely known than A2LA)
- Physical location not prominently disclosed on website
- Amazon TIC status not assessed (Amazon publishes its approved-provider roster only inside Seller Central, which we cannot read)
Dietary supplement manufacturers must comply with 21 CFR Part 111 (cGMP). What Part 111 requires
The connection map between Contract Testing Laboratories of America and other vendors, capabilities, and certifications is in the manufacturer atlas.
Enforcement screening: included in Inventory Ready's most recent completed pass against FDA's published recall datasets (2026-07-09). Method and limits →
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