Choline Testing: Foods, Supplements & Raw Materials
Choline is not a single compound. It shows up in multiple forms across supplements, foods, and raw materials, and choosing the wrong test gives you data that does not actually answer your question.
Choline-containing products are growing across the supplement and food industries, and so are regulatory and labeling expectations. Reliable analytical data supports regulatory compliance, nutrition and supplement facts labeling, raw material qualification, finished product QC, formulation development, ingredient verification, and lot-to-lot consistency.
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Total choline tells you one story. Free choline, phosphatidylcholine, and Alpha-GPC each tell their own. We make sure the story your data tells is accurate, defensible, and built on the right method for the job.
Free Choline Testing in Supplements
We quantify free choline in dietary supplements and raw materials when you need to measure choline present outside of more complex phospholipid structures. This is especially useful for products formulated with choline salts or other directly available choline sources.
Commonly tested sample types include capsules, tablets, powders, functional drink mixes, premixes, and raw ingredient materials. This analysis supports formulation verification, specification testing, stability evaluations, and finished product label review.
Total Choline in Food Products by AOAC 2012.18
For food and beverage products, we use AOAC Official Method 2012.18 to quantify total choline content. Because food matrices often contain choline in multiple forms, total choline analysis is typically the right approach when you need the full nutritional picture.
This method supports nutrition labeling, ingredient characterization, product development, nutrient claim verification, and side-by-side comparison across formulations or processing conditions.
Phosphatidylcholine Testing by HPLC-ELSD
We quantify phosphatidylcholine using HPLC-ELSD under USP-based guidelines, a method well suited for phospholipid compounds that do not measure cleanly by standard UV detection alone.
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Common applications include lecithin raw materials, phospholipid ingredients, softgels, lipid-based nutritional products, functional foods, and specialty formulations containing phosphatidylcholine.
Alpha-GPC Testing by HPLC-ELSD
We test Alpha-GPC by HPLC-ELSD across raw materials and finished products. Alpha-GPC is a staple in cognitive, sports nutrition, and specialty supplement formulations, where accurate identity and quantification matter for both formulation control and label substantiation.
Typical sample types include bulk Alpha-GPC ingredients, capsules, tablets, powders, ready-to-mix formulations, and multi-ingredient nootropic blends.
Choosing the Right Method
Choline can be present in several different chemical forms depending on the matrix and formulation, so method selection is critical. The right test depends on what you are measuring, why you are measuring it, and what kind of documentation you need on the other end.
We help you select the right method based on the matrix you are working with, the form of choline present, and the project objective, whether that is R&D, QC, labeling support, or supplier qualification. If you are not sure which test fits your product, we will walk you through it.
Matrices We Test
Dietary supplements · Functional foods · Beverage powders · Capsules and tablets · Softgels · Lecithin ingredients · Nootropic products · Infant and adult nutrition products · Fortified foods · Bulk raw materials and premixes
