All formulas
Head to head
Bobbie Organic vs Kirkland Signature ProCare
In independent testing, Bobbie Organic showed lower heavy-metal levels overall (purity 92 vs 86). The full lab numbers, metal by metal:
| Purity score | 92A | 86A |
| Lead ppb | 1.2 | 1.7 |
| Aluminum ppb | 1,030 | 1,143 |
| Price | $1.84/oz | $0.48/oz |
| Est. cost at 28 oz/day | $8.01/day | $2.07/day |
| Origin | US | US |
| Base | Cow's milk | Cow's milk |
| Buy | Buy |
BobbieOrganic
Kirkland SignatureProCare
Lab data: Consumer Reports independent testing, March 2025. Purity scores are relative to the tested cohort — methodology. Not medical advice; consult your pediatrician.