Vitamins play a crucial role in maintaining human health, and consumers rely on dietary supplements to meet their daily nutritional needs. In an increasingly regulated and competitive market, ensuring the accuracy, stability, and compliance of vitamin content in supplements is essential—not only for meeting global standards but also for building consumer trust and brand reputation.
With over 20 years of experience in analytical chemistry and nutraceutical science, Alfa Chemistry provides advanced vitamin testing services designed specifically for dietary supplement manufacturers, formulators, and brand owners. We help ensure your products deliver the promised nutritional value—every time.

At Alfa Chemistry, we offer a full spectrum of testing services for both fat-soluble and water-soluble vitamins, along with their active forms, precursors, and degradation products.
| Category | Analytes Covered | Testing Methods |
|---|---|---|
| Fat-Soluble Vitamins | Vitamins A (retinol, retinyl esters), D2, D3, E (tocopherols, tocotrienols), K1, K2, K3 | HPLC, LC-MS/MS |
| Water-Soluble Vitamins | Vitamin C (ascorbic acid), B-complex (B1, B2, B3, B5, B6, B7, B9, B12) | HPLC, Fluorescence, Spectrophotometry |
| Active Forms | Pyridoxal-5′-phosphate (B6), methylcobalamin (B12), folinic acid, other coenzyme forms | Fluorometric assay, Immunoassay |
| Stability Testing | Degradation products, shelf-life profiling under heat, UV, and humidity stress | Accelerated & Real-time Stability Testing |
Whether you're testing raw materials, in-process samples, or finished goods, Alfa Chemistry provides accurate, reliable results to support your product claims and quality assurance goals.
We use advanced techniques like HPLC, LC-MS/MS, and fluorometric analysis to give you precise results—quickly and consistently.
From raw materials to finished products, we offer testing at every stage. We also provide shelf-life and stability studies to help you understand how your vitamins hold up over time.
Whether you need a full vitamin profile or just want to verify a single ingredient, we tailor our services to match your formulation and budget.
Partner with Alfa Chemistry
At Alfa Chemistry, we believe accurate testing builds trust—between you and your customers, and between your products and the market. Our goal is to make sure your supplements are safe, compliant, and deliver what they promise.
Get in touch with us today to learn more about our vitamin testing solutions.
Our products and services are for research use only and cannot be used for any clinical purposes.