Lead Safe Mama tested one batch in 2025-12. The single result is real for that bag. The actual question is whether the next bag from the same shelf is similar.
One Lead Safe Mama ICP-MS test on a single bag of Sencha Naturals Organic Everyday Matcha was published in 2025-12. The single result is real for that batch. It does not tell you whether the next bag from the same shelf is similar. Brand consistency on heavy metals is a marketing claim, not a chemistry one.
Same brand sources from different farms, different harvests, different countries, different factory runs. Same brand, different lot, can disagree by an order of magnitude. We catalog the cases where this has happened on /pages/contested-foods.
From Lead Safe Mama's published lab report. One batch, one ICP-MS panel, one moment in time.
| Tested by | Lead Safe Mama (sent to Purity Labs for ICP-MS) |
| Date published | 2025-12 |
| Reported values | The specific Pb, Cd, As, and Hg values are in the embedded lab report image on the source post. The post text on Lead Safe Mama's site does not always surface the exact ppb numbers; the report PDF is the authoritative record. |
| Sample size (n) | 1 batch (single bag from a single retail purchase) |
| Source | Lead Safe Mama post → |
Purity Labs publishes a price list. The heavy-metals panel used for this work, test CH114 (lead, arsenic, mercury, cadmium), is $80 per sample with digestion included (Purity Laboratories 2023-2024 price list, puritylabsinc.com). Lead Safe Mama's budget page solicits a flat $495 per-product Community Sponsorship rate, the same figure across every product regardless of the actual test or result. The documented lab cost is $80. Full sourcing and the line-by-line math are on our Lead Safe Mama receipts page.
1. Don't make a brand decision off one batch. The 2025-12 Lead Safe Mama result describes one bag at one moment. Same brand, different lot, can read very differently.
2. If you want a sealed-sample retest, the Lead Lottery is $100 per panel. Same lab Lead Safe Mama uses (Purity Labs since March 2025). Sealed retail unit shipped direct, factory seal opened only at the lab.
3. Read the broader audit. Our Lead Safe Mama food-testing audit catalogs 451 of her published tests. /pages/contested-foods walks the cases where two samples of the same product produced very different numbers.
If you chip in $100 to the Lead Lottery for this product, we buy a sealed retail unit, ship it sealed to Purity Labs, and publish the result side by side with the Lead Safe Mama number on record. Same lab. Real chain of custody. No anonymization.
The Lead Lottery → Contested test results →Lead Safe Mama published a single ICP-MS result in 2025-12. The result is real for that bag. It does not tell you what the next bag from the same shelf will read. Single-batch testing on packaged food is one snapshot, not a brand verdict. Source.
The sample was tested at Purity Labs per Lead Safe Mama's published report. Read the audit of her lab choice and pricing.
Two reasons. First, real batch-to-batch variability is the norm in any food product. Same brand sources from different farms, different harvests, different countries, different factory runs. Cereal grain absorbs metals unevenly across fields. Spices vary by source country. Second, chain-of-custody differences matter. A sample opened and re-packaged in a home kitchen is not the same as one shipped sealed direct to the lab. Read the contested-foods cases.
The Lead Lottery is our $100/panel crowdfunded retest model. Anyone can nominate; anyone can chip in. When a product reaches $100 of chip-ins, we buy a sealed retail unit, ship it sealed to Purity Labs (the same lab Lead Safe Mama uses), and publish the result. Lead Lottery details.
Turmeric, paprika, chili powder, cumin, garam masala from countries with looser heavy-metals limits than the US. Adulteration with lead chromate to enhance color is documented in published studies. Daily users add it up, even at small per-meal doses.
All four are free, no signup. Built and updated by us. Anyone, anytime, in your kitchen or your house or wherever you happen to be.
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