Are you launching or selling a product in California? California Prop 65 testing is essential to avoid costly fines, lawsuits, or Amazon takedowns. At Qalitex Laboratories, we specialize in fast and reliable testing for lead, cadmium, arsenic, phthalates, and other Prop 65-listed substances found in dietary supplements, food products, and cosmetics.

Our experts help you determine whether your product requires a Prop 65 warning label, perform exposure calculations, and support you with technical documentation—so you can stay compliant and protect your brand.

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What Is California Proposition 65 and Why Does Testing Matter?

California Proposition 65 (often shortened to California Prop 65) is a consumer safety law that requires warnings on products containing chemicals known to cause cancer, birth defects, or reproductive harm. The list now includes over 900 chemicals, and testing is the only way to know if your product exceeds safe limits.

Common chemicals that trigger Prop 65 requirements:

• Heavy metals (lead, arsenic, cadmium, mercury)

• Phthalates (DEHP, DBP, BBP) in plastics and cosmetics

• Solvents (toluene, benzene, formaldehyde)

• Pesticide residues (glyphosate, DDT)

• Byproducts (acrylamide in baked goods or roasted supplements)

If you sell into California—even from out of state or internationally—you are legally responsible for compliance.

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What We Test For

Qalitex offers full-spectrum California Prop 65 testing including:

• Quantitative analysis of listed chemicals

• Exposure assessments (µg/day) for safe harbor limits

• Product types tested:

  • Herbal and dietary supplements

  • Superfoods, botanicals, and teas

  • Functional foods and health drinks

  • Skin care and personal care items

  • Pet supplements and treats

  • Plastic packaging and children’s products

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Testing Methods Used

Our lab uses industry-standard analytical techniques such as:

• ICP-MS / ICP-OES (heavy metals like lead, cadmium)

• LC-MS/MS (phthalates, solvents, pesticides)

• GC-MS/MS (volatile organics, fragrance-related chemicals)

• USP <232>, <233>, <561> and EPA methods

All results are validated and formatted to support:

• Regulatory audits

• Amazon/retailer documentation

• Third-party certifications

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 Why Choose Qalitex for Prop 65 Testing?

• Affordable testing options for startups and manufacturers

• Rush turnaround available (2–3 business days)

• Support for private label & white label products

• Experienced scientists who understand real-world enforcement

• Personalized exposure reports with MADL/NSRL thresholds

Our laboratory is a trusted partner for Amazon sellers, retail brands, and FDA-regulated manufacturers.

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Frequently Asked Questions (FAQ) – California Prop 65 Testing

Q: Do I need Prop 65 testing for my supplement?
Yes—if your supplement contains botanical ingredients (like turmeric, ashwagandha, or green tea), minerals, or natural extracts, it may contain trace levels of lead or arsenic that exceed safe harbor limits.

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Q: How do I know if my product needs a California Prop 65 warning?
Only laboratory testing combined with exposure risk calculation can determine whether a Prop 65 warning is required. Qalitex provides both chemical analysis and µg/day exposure estimates based on product usage.

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Q: What is a safe harbor limit under Prop 65?
Each listed chemical has a daily exposure threshold:

• MADL (Maximum Allowable Dose Level) for reproductive toxins

• NSRL (No Significant Risk Level) for carcinogens
  We compare your product’s results to these levels to determine if a warning label is needed.

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Q: Can I sell on Amazon without Prop 65 testing?
Amazon increasingly requires Prop 65 compliance documentation, especially for supplements, cosmetics, and imported products. Qalitex reports are accepted for Amazon listings.

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Q: How long does testing take?
Our standard turnaround is 5 business days, with rush options available in 2–3 days depending on sample type and number of analytes.

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Q: How much does California Prop 65 testing cost?
Pricing starts at $250 per sample depending on matrix and chemical panel. Bulk rates and startup discounts are available.

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