My standing rule: test with a kit, not a kid. Blood-lead screening is a downstream catch — it tells you a child has already been exposed. The point is to find the source upstream and remove it before it becomes a blood number.
On January 1, 2024, California's AB-899 took effect. By January 1, 2025 the public-disclosure requirement kicked in. Baby and toddler food manufacturers now have to test each finished product for lead, arsenic, cadmium, and mercury at least monthly — and publish the results in a way consumers can actually see (typically QR codes on packaging linking to product-level reports).
What it requires, in plain English
- Monthly testing of each baby/toddler food product (children under age 2).
- Four heavy metals: arsenic, cadmium, lead, mercury.
- Public disclosure beginning January 1, 2025 — searchable, web-accessible, ideally QR-linked from the package.
- Applies in California — but national brands typically don't ship CA-specific SKUs, so it's effectively national.
Why this is a bigger deal than the FDA work
The FDA's Closer to Zero initiative sets non-binding action levels (10 PPB most foods, 20 PPB root vegetables and dry infant cereals). What it doesn't do is force public disclosure of what each company is actually finding in its testing. AB-899 closed that gap. For the first time, parents can pull up product-level lead data instead of relying on company assurances or third-party investigative reporting.
Industry response
Industry compliance has been mixed. Larger national brands (Gerber, Beech-Nut, Plum Organics, Sprout) generally surfaced testing data on their websites by the deadline. Smaller brands and supplement-adjacent products (powdered formulas, electrolyte drinks marketed to toddlers) have lagged. Several follow-up enforcement actions are pending in California Attorney General review.
A reminder on how to read the numbers
PPB on a label is a concentration. It is not an exposure number. Convert to actual dose using:
µg per serving = PPB × grams per serving ÷ 1000
Compare against the FDA Interim Reference Level of 2.2 µg/day for children. A 100 g serving of a baby food at 10 PPB lead is 1 µg — under half the FDA daily IRL. The transparency AB-899 created lets you do this math; the math is the point. (More: my post on dose math.)
What to do
If you buy any baby/toddler food regularly, scan the QR code and look at the actual product-level numbers. Compute the dose for your child's serving size. Switch products if the dose math is concerning.
For lead in your home (paint, ceramics, faucets, dust) — that's where the high-concentration sources live, and that's where consumer chemistry like the fluorescence-spectroscopy reagents in Fluoro-Spec, the Lumetallix product, or generic Chinese MABr tests can give you immediate visual confirmation in seconds. Test with a kit, not a kid.
For paint, dust, ceramic glaze, and surface contamination at PPM levels, modern fluorescence spectroscopy-based tests give you immediate field detection. Apply a methylammonium-bromide reagent (Fluoro-Spec from Detect Lead, the Lumetallix-branded reagent, or generic Chinese MABr products use the same chemistry) and the lead-bearing surface fluoresces green under a 365 nm UV flashlight. Single-particle resolution; no lab.
Key facts
- Effective: January 1, 2024 (testing); January 1, 2025 (disclosure)
- Scope: baby and toddler food (children under age 2)
- Metals: arsenic, cadmium, lead, mercury
- Cadence: at least monthly
- Industry response: larger brands compliant; smaller brands lagging
FAQ
What does AB-899 require?
Monthly heavy-metal testing of baby food + public disclosure starting Jan 1, 2025.
Why does it apply nationally?
National brands don't ship CA-specific SKUs.
How is it different from FDA Closer to Zero?
Closer to Zero sets non-binding action levels; AB-899 forces public disclosure.
References
- California Assembly Bill 899 (2023) — leginfo.legislature.ca.gov
- California Department of Public Health implementation guidance for AB-899
- U.S. FDA, "Closer to Zero" Action Plan and Interim Reference Levels (2022)