Proteins, peptides and amino acids testing is important. Whether you’re formulating a collagen drink, a peptide serum, or a plant-based protein powder, the need for accurate testing and analysis is critical to ensure safety, label accuracy, and consumer trust.
In this guide, we’ll break down the key types of protein, peptide, and amino acid testing available to brands and product developers.
Why Protein and Peptide Testing Matters
Protein-based ingredients can be prone to:
- Adulteration (e.g., spiking with cheaper fillers)
- Heavy metal contamination
- Microbial growth due to organic composition
- Inaccurate amino acid profiles
Testing provides peace of mind—and proof—for brands, retailers, and regulators.
Types of Testing Services for Proteins, Peptides, and Amino Acids
1. Collagen Supplement Testing
Collagen, especially marine collagen, is sensitive to processing conditions and environmental contaminants. Our collagen supplement testing includes:
- Identity confirmation (e.g., marine vs bovine source)
- Heavy metal testing (e.g., mercury, cadmium)
- Microbial screening (total plate count, yeast/mold)
- Label verification (collagen content)
Related: Marine collagen testing
2. Peptide Purity Testing
Peptide-based skincare products are rapidly growing in popularity—but the purity of synthetic or bio-derived peptides can vary drastically.
We offer peptide purity testing for:
- Cosmetic peptides (Matrixyl, Argireline)
- Nutraceutical peptides (bioactive compounds in supplements)
- Detection of synthetic analogs or undeclared ingredients
Related: Cosmetic peptide analysis
3. Amino Acid Profile Analysis
Understanding the full amino acid profile of a protein source is critical for:
- Product development (e.g., muscle recovery blends)
- Nutritional labeling
- Marketing claims (e.g., “complete protein”)
Our amino acid analysis covers all 20 standard amino acids and can be applied to:
- Plant proteins
- Collagen peptides
- Whey or casein blends
- Fermented or hydrolyzed products
Related: Supplement amino acid analysis, Hydrolyzed protein analysis
4. Protein Powder Contaminant Testing
Whether you’re formulating with whey, pea, soy, or rice protein, contamination is a real risk due to the organic and porous nature of protein powders. We test for:
- Heavy metals (arsenic, lead, cadmium, mercury)
- Pathogenic bacteria (Salmonella, E. coli)
- Yeast & mold counts
- Moisture content and water activity (to evaluate shelf stability)
Related: Whey protein purity analysis
5. BCAA and Plant-Based Supplement Testing
Branched-chain amino acids (BCAAs) and plant proteins are especially prone to label fraud and adulteration.
We perform:
- Identity and purity testing
- Amino acid ratio confirmation
- Adulterant screening (e.g., melamine or undeclared synthetics)
Related: BCAA supplement testing, Plant protein identity testing
Who Needs These Tests?
- Supplement brands launching functional protein powders, collagen drinks, or amino acid blends
- Cosmetic formulators using peptides in creams, masks, or serums
- Retailers or importers requiring third-party lab documentation
- Clean-label advocates who want transparent proof of product safety
Why Work With a Specialized Testing Lab?
At Qalitex Laboratories, we offer targeted chemical and microbiological analysis for dry powders and herbal-based ingredients—perfect for collagen, peptides, protein powders, and functional botanicals. We’ll help you:
- Verify identity and potency
- Detect contaminants early
- Meet label claims and retailer standards
- Protect your brand and your customers
Ready to Test Your Product?
Contact us today to get a quote for:
- Collagen purity testing
- Amino acid profile analysis
- Peptide contamination screening
Contact us now or email nour@qalitex.com
