Many beetroot juice bottles don’t say how much nitrate is inside, and when scientists test them, the actual nitrate levels often don’t match what’s on the label—making people doubt the product and messing up science studies.

A nationwide or regional survey of commercially available beetroot juice products, where each product is purchased from retail outlets, nitrate content is measured via standardized spectrophotometric or ion chromatography methods, and label disclosures are systematically recorded and compared to measured values to quantify the rate of non-disclosure and discrepancy.

Tracking the same brands and product batches over multiple production cycles to determine whether labeling inconsistencies are random or systematic, and whether manufacturers change labeling practices after regulatory scrutiny or public exposure.

Whether products that omit nitrate labeling are more likely to have higher measurement discrepancies than those that do list it, suggesting intentional omission or poor quality control.

To identify patterns among products with the largest discrepancies (e.g., brand, country of origin, price point, organic status) to generate hypotheses about root causes.

Whether consumers who encounter discrepancies between label and lab results report reduced trust in the brand or in beetroot juice as a health product.