Seaweed & Kelp Product Comparison Chart (Nori, Supplements, Seaweed Snacks, etc.)

Published: November 28, 2025

The image on this page is a comparative chart of toxicant levels found in seven different seaweed or kelp products  (including snacks with seaweed as a primary ingredient) that we have tested and reported on to date.

Below, you’ll find links to  each of the articles containing lab reports for the products included in this chart. The lab report is always at the very bottom of each article, AFTER the sharable social media graphic and after the list of lab-tested safer choices identified to date via the Lead Safe Mama, LLC Community Collaborative Laboratory Testing Initiative.

The products in this chart are arranged in ascending order based on their Arsenic levels. Arsenic is a known carcinogen, with exposure confirmed as being causally linked to cancers.

1. Nori Maki Rice Crackers
2. Gimme Organic Roasted Seaweed Snack – Sea Salt (Sunflower Oil)
3. Gimme Organic Roasted Seaweed Snack – Avocado Oil
4. Costco Kirkland Signature Organic Roasted Seaweed Snack
5. Emerald Cove Organic Toasted Sushi Nori
6. Yama Moto Yama Gold Premium Roasted Sushi Nori
7. Now Food Organic Kelp Pure Powder Super Green Supplement Powder