Heart & Soil Grass-Fed Whey Protein (Unflavored)

• NSF’s Certified for Sport database lists the unflavored powder (id 1721676; 900 g, two scoops of 30 g, 24 g protein, 11 lots). The listing marks it free of GMOs, gluten, soy, rBGH growth hormones, artificial colors, flavors, preservatives and sweeteners.
• The label is one ingredient, whey protein concentrate from grass-fed cattle. NSF’s listing gives 24 g of protein, 110 calories and 1 g of sugar per 30 g serving, and Heart & Soil says there are no added hormones, fillers, gums or lecithins.
• At $68 for 30 servings it costs about $2.27 a serving, or 9 cents per gram of protein. A subscription is $61.20, and Amazon sells the same bag for about $73.

• We have no heavy-metal or PFAS numbers. Heart & Soil says the whey is independently tested for heavy metals, pesticides and impurities but posts no results, and its certificate list names 15 other products, not the whey. NSF’s lead limit, 10 µg a day as Consumer Reports describes it, is far looser than CR’s 0.5 µg.
• A PFAS warning appears on its pages. Heart & Soil shows California visitors a Prop 65 warning for PFOS and PFNA on every supplement page we opened, this one included. Its wording matches, bracket for bracket, the warning in the settlement over its Pure American Liver capsules (court judgment entered 2026-08-13), which bars it from selling in California any product with a quantifiable level of PFOS and PFNA unless it carries that warning. That points to a blanket notice, not a PFAS finding in the whey, but we cannot tell which. No Attorney General notice names the whey.
• “100% grass-fed Australian cows,” “cold-processed” and “never heated above 165°” are the maker’s words. No certifier or farm is named, and the page does not say whether the milk is pasteurized.
• A concentrate carries more lactose than an isolate. We reviewed only the unflavored powder; the Chocolate Sea Salt version has 12 g of sugar per 43 g serving.

Third-party tested

Yes

Tested by

NSF Certified for Sport

1. Heart & Soil Grass-Fed Whey Protein (Unflavored) product page. Maker’s page. Price, size, ingredient and sourcing claims, seen 2026-10-22. Also carries a California-only Prop 65 block naming PFOS and PFNA. Open ↗
2. Heart & Soil FAQ: are your products tested for heavy metals, pesticides and microbes?. Maker’s page. Links certificates of analysis for the gelatin capsules and 15 products. None is for the whey. The article shows an update about eight months before our visit. Open ↗
3. NSF Certified for Sport listing: Grass-Fed Whey (Unflavored). Certifier or regulator listing. Open ↗
4. NSF Certified for Sport listing: Grass-Fed Whey (Chocolate Sea Salt). Certifier or regulator listing. Shows 12 g of sugar per 43 g serving. Open ↗
5. NSF Certified for Sport: what the mark means. Independent source. Says the program checks banned substances, label accuracy, unsafe levels of contaminants and the facility. Open ↗
6. Heart & Soil Grass Fed Whey Protein Powder, Unflavored, on Amazon. Independent source. Seen 2026-10-22: $73.00, sold by Heart & Soil, LLC, shipped by Amazon. Open ↗
7. Consumer Reports: Protein Powders and Shakes Contain High Levels of Lead. Test report. Source for NSF’s 10 µg a day lead limit and CR’s 0.5 µg level of concern. Open ↗
8. California Attorney General Prop 65 notice 2025-04599 (Heart & Soil Pure American Liver, PFOS and PFNA). Certifier or regulator listing. Settlement reported 2026-06-01; consent judgment entered 2026-08-13. Section 3.1 covers any product with quantifiable PFOS and PFNA, and section 3.2 sets the warning wording. Open ↗
9. California Attorney General: 60-day notice search for “Heart & Soil”. Certifier or regulator listing. Three notices on 2026-10-22: Bone Matrix (lead) and Pure American Liver (PFAS, two notices). None names the whey. Open ↗

• Amazon approx. $73. Listed as 2 lbs (900 g), sold by Heart & Soil, LLC and shipped by Amazon. Seen 2026-10-22.

Prices as we saw them on October 22, 2026. They change often. These links carry no tracking code and earn us nothing.

• Transparent Labs Grass-Fed Whey Protein Isolate (unflavored) NSF-listed, with lot-level lead reports posted by the maker. About $2.00 a serving at 4 lb.
• Levels Grass-Fed Whey (unflavored) A similar concentrate with a Clean Label Project certificate instead of NSF. About $2.07 a serving at 2 lb.
• Momentous Whey Protein Isolate (unflavored) NSF-listed with a certificate for every lot. About $2.80 a serving.

• Muscle Recovery and Metabolic Health Article How whey protein supports muscle growth, blood sugar regulation, glutathione production, and cardiovascular health
• How Much Protein Do You Need? Article How much protein adults, older people and lifters need, plant versus animal sources, whether high intakes harm kidneys or bones, and how to spread it.
• How to Tell if a Supplement Is Pure and Accurate Article What audits found in supplement bottles, which products are riskiest, and what third-party seals, lab certificates and FDA tools can and cannot tell you.
• Is Dairy Healthy? Article What large studies say about milk, yogurt and cheese: heart disease, diabetes, bones, cancer, lactose and A2 milk, and how much is a sensible amount.