Three line items. The first one is real. The second is partly real. The third is the spread.
1. Lab fee. Purity Labs charges $80 per sample for the CH114 4-metal ICP-MS panel (lead, arsenic, mercury, cadmium), digestion included, per their published 2023-2024 price list. Lead Safe Mama uses Purity Labs for ICP-MS food testing. Her current lab is Purity Labs, which she has used since March 2025 (her own statement). Before that she used SimpleLab, quoting $195 per kit in her May 2024 post. Her current documented lab cost is the published Purity CH114 fee: $80 per sample. We use the same lab she does.
2. Sample purchase. A retail unit of cream cheese is $4. A box of cereal is $6. A jar of cinnamon is $4. The product-purchase line in her budget runs $2 to $450, which is honest about the high tail (some specialty supplements are expensive), but the median pantry item is $5 to $20. We allocate $20 in our $100 model. Generous to ourselves on this line.
3. Administrative and support. Her budget allocates $180 to $325 to this line per product. This is the line that creates the spread. A separate single-tester operation has real overhead: hosting, accounting, shipping logistics, sample archiving, reporting, communications. We don't have that overhead because detectlead.com already exists. The infrastructure that runs the calculator, the dish database, the lookup pages, and this site already has hosting, accounting, and a full-time founder. Adding one ICP-MS submission to that infrastructure costs effectively nothing in marginal admin terms.
So the spread between $80 and $495 isn't lab inflation. It is the cost of running a stand-alone testing operation. We are not running one. We are running a lead-detection company that happens to commission ICP-MS panels as part of the work, and the marginal cost of one more panel is the lab fee plus the cost of a sealed retail unit. That's $100.