Supported by Little Spoon - Learn about our editorial standards and transparency policy.

Home / Comparison Guides / How we built this

Editorial standards

How we built this

What the infant formula comparison covers, where each fact comes from, and what we have not verified yet.

Data as of October 16, 2026

What this is

A side-by-side of 14 infant formulas on price, confirmed label amounts, and what each brand shows about its testing. Products are compared only within a type.

Why there is no overall score

A score would rank formulas on details we have not fully verified and on features parents weigh differently, and parents could mistake it for medical advice. We show facts instead.

What it can’t tell you

Which formula is right for your baby, how your baby will tolerate it, or how much of any contaminant is in the can you hold. Your pediatrician can advise on the first two; only that batch’s results speak to the third.

Where each fact comes from

  • Prices: the latest price we found across the retail sources where each product can be bought, October 2026. Prices are subject to change and vary by store, can size and subscription.
  • Label amounts and ingredients: each product’s nutrition panel, nutrient table and ingredient list, October 2026. We show amounts per 100 kcal. DHA and ARA amounts marked calculated are estimates, not label values. Each brand gives them as a percent rather than in milligrams: Kendamil as 0.46% DHA and 0.23% ARA of total fat, and Little Spoon as 0.4% DHA and 0.7% ARA of fatty acids. We multiplied each percent by the 5.3 g of fat per 100 kcal on the label and, for Little Spoon, assumed fatty acids are about 95% of fat. That gives about 24 mg DHA and 12 mg ARA for Kendamil and about 20 mg DHA and 35 mg ARA for Little Spoon. Nara states its amounts on its label; the other labels state none.
  • Testing facts: each brand’s own pages and the sources listed under every fact.
  • Recalls: FDA recall and outbreak notices and news coverage, searched October 16, 2026. We could not query FDA’s recall database directly, so a recall that was not indexed or covered could have been missed.

The four testing facts

Testing factWhat it means
Results you can look up by batchWhether the brand’s page lets you look up test results for a specific batch or lot.
Shows measured amountsReports the measured amount of each metal in ppb, not just pass or fail.
Publishes its own safety limitsMaximum levels the brand sets itself, with numbers.
Independent certificationA contaminant certification from an outside group, as the brand states it.

Each fact also shows how it was checked:

  • Confirmed on the brand’s page or record
  • Stated by the brand
  • Reported by an independent source

How to read the testing facts

LabelUsed for
FoundA testing fact we found
No recall foundRecall check with no recall
PartlyA testing fact that is only partly met
Not found on the pages we reviewedA testing fact we did not find
Not yet verifiedA fact we have not confirmed
Recall foundRecall check with a recall

“Not found” means we did not find it on the pages listed under that fact’s basis, as of the date shown. It does not mean the brand never does it. “Not yet verified” means we have not confirmed it, and we leave it out.

The “What is this?” notes explain what ingredients are and why they are added or studied. They are general information, not claims about any product, and not medical advice.

How the sorting works

This ranks one thing at a time. It does not say which formula is best.

SortHow it works
Lowest pricePrice per 100 kcal from one retailer listing for each product, taken in October 2026. Store brands cost the least.
Results you can look up by batchProducts whose brand pages let you look up test results for a batch. California’s baby food law does not cover infant formula, so every brand that does this does it voluntarily.
Shares the most about its testingCounts the four testing facts we found each brand publishes or states. A product with many facts not yet verified can rank low only because we could not check them. Little Spoon’s entry was not independently audited.

What we have not verified

19 of 56 testing facts are not yet verified. Label amounts come from each product’s label (14 products; for Parent’s Choice, from the current Advantage panel and ingredient list). Testing facts were checked less thoroughly: Kirkland has not been checked, Parent’s Choice and Up&Up were checked only on retailer product pages and in searches, and Little Spoon’s own entry was not independently audited. The Kirkland price is the Costco Same-Day Delivery price, which includes a delivery markup. We searched for recalls for every product but could not query FDA’s database directly.

ProductBatch lookupMeasured amountsOwn limitsCertificationPriceLabel amountsRecall check
Little SpoonFoundFoundFoundFoundFoundFoundNo recall found
BobbieFoundNot foundNot foundFoundFoundFoundNo recall found
KendamilFoundNot foundPartlyFoundFoundFoundNo recall found
NaraNot yet verifiedNot yet verifiedNot yet verifiedNot yet verifiedFoundFoundRecall found
MunchkinNot foundNot foundNot yet verifiedFoundFoundFoundNo recall found
BubsNot yet verifiedNot yet verifiedNot yet verifiedFoundFoundFoundNo recall found
Enfamil NeuroProNot foundNot foundNot yet verifiedNot yet verifiedFoundFoundNo recall found
KirklandNot yet verifiedNot yet verifiedNot yet verifiedNot yet verifiedFoundFoundNo recall found
Similac 360Not foundNot foundPartlyNot yet verifiedFoundFoundNo recall found
Parent’s ChoiceNot foundNot foundNot foundNot foundFoundFoundNo recall found
Up&UpNot foundNot foundNot foundNot foundFoundFoundNo recall found
Enfamil GentleaseNot foundNot foundNot yet verifiedNot yet verifiedFoundFoundNo recall found
Similac SensitiveNot foundNot foundPartlyNot yet verifiedFoundFoundNo recall found
Similac AlimentumNot foundNot foundPartlyNot yet verifiedFoundFoundNo recall found

About this tool

Facts come from each brand’s public pages, product labels and public records. Little Spoon’s testing facts come from its own pages and were not independently audited. Pages change, and we may have missed something.