Why Heavy Metal Testing Matters for Supplement Brands

At SREKE, we understand that heavy metal contamination is one of the most critical compliance risks in the dietary supplement industry. Regulatory bodies like the U.S. FDA and the European Food Safety Authority (EFSA) enforce strict limits on elements such as lead, arsenic, cadmium, and mercury in finished products. For brand owners, failing to meet these standards can result in product recalls, legal liability, and reputational damage.

We work with manufacturers who prioritize rigorous testing protocols aligned with USP Chapter <232> (Elemental Impurities) and <233> (Determination of Elements), ensuring every batch meets global safety thresholds. Our GMP-certified facility in Guangzhou implements comprehensive raw material screening, in-process controls, and finished product testing to safeguard your brand.

Key Manufacturing Considerations at SREKE

Our manufacturing process integrates heavy metal testing at multiple stages to guarantee compliance and product integrity.

1. Raw Material Qualification

• Every incoming ingredient undergoes screening for elemental impurities before production begins.
• We require Certificates of Analysis (COA) from suppliers and conduct our own verification testing.
• Herbal and botanical extracts are prioritized for additional scrutiny due to higher contamination risk.

2. In-Process Controls

• Our HACCP and ISO 22000 systems monitor contamination points during blending, encapsulation, and packaging.
• Environmental testing of facilities and equipment prevents cross-contamination.

3. Finished Product Testing

• Each batch is tested using ICP-MS (Inductively Coupled Plasma Mass Spectrometry) for heavy metals.
• We provide full COAs with every shipment, documenting compliance with FDA, EFSA, and USP limits.
• Third-party lab verification is available upon request for added transparency.

4. Compliance Documentation

We maintain detailed records for audit readiness, including supplier qualifications, test results, and corrective actions. Our team assists you in preparing documentation for regulatory submissions in the U.S., EU, and other key markets.

How SREKE Helps You Get to Market Faster

At SREKE, we streamline the path from formulation to shelf without compromising compliance.

• MOQ Flexibility: We support low minimum order quantities for startups and scalable production for established brands.
• Lead Time Efficiency: Our streamlined testing and QA processes reduce delays, with typical turnaround times of 4–6 weeks for standard orders.
• Formulation Support: Our R&D team helps you select ingredients and delivery formats (softgels, capsules, tablets, powders, gummies, liquids) that align with your compliance goals.
• Packaging Options: We offer child-resistant, tamper-evident, and sustainable packaging that meets regional labeling regulations.

By partnering with a GMP-certified OEM/ODM like SREKE, you gain a manufacturing ally that handles complexity so you can focus on brand growth.

Industry Trends and Market Opportunities

The global dietary supplement market continues to grow, with consumers increasingly demanding transparency and safety. Heavy metal testing is no longer optional—it is a baseline expectation for reputable brands.

• Regulatory Tightening: The FDA has issued updated guidance on elemental impurities, and EFSA regularly revises maximum limits for contaminants.
• Brand Differentiation: Brands that proactively communicate their testing standards build consumer trust and stand out in a crowded market.
• Global Expansion: Compliance with international standards opens doors to export markets in North America, Europe, and Asia.

At SREKE, we stay ahead of regulatory changes and advise our partners on best practices for formulation, testing, and labeling.

Frequently Asked Questions

What heavy metals do you test for?

We test for lead, arsenic, cadmium, mercury, and other elemental impurities as specified by USP <232> and regulatory limits set by the FDA and EFSA.

Do you provide Certificates of Analysis?

Yes. Every batch we produce includes a detailed COA with heavy metal test results, microbial screening, and potency verification.

Can you help with private-label or custom formulations?

Absolutely. Our ODM and OEM services cover custom formulations, private-label products, and white-label solutions across multiple delivery formats.

What is your typical lead time?

Standard orders typically take 4–6 weeks from formula finalization to shipment, depending on complexity and packaging requirements.

Do you work with small brands?

Yes. We offer flexible MOQs and support startups and emerging brands with compliant, high-quality manufacturing.

Ready to launch your supplement brand? SREKE provides GMP-certified OEM/ODM manufacturing for softgels, capsules, tablets, powders, gummies, and liquids. Contact us for a free quote or email [email protected] — we respond within 24 hours.