Table of contents
- Heart and Soil vs Transparent Labs
- Heart and Soil vs Transparent Labs TL;DR
- How I Approach This Heart and Soil vs Transparent Labs Comparison
- Protein Transparency & Amino Integrity
- Does Either Brand Show Signs of Amino Spiking?
- Third-Party Testing: Who’s Actually Verified?
- Sourcing Transparency & Label Honesty
- Ingredients & Sweeteners — Clean or Just “Clean Looking”?
- Heavy Metals & Prop 65 Concerns
- Taste & Mixability — Which One Drinks Better?
- Nutrition Facts & Protein Density Comparison
- Price per Serving — Which Is the Better Value?
- Who Each Brand Is Best For
- Final Verdict — Should You Buy Heart and Soil or Transparent Labs?
- Heart and Soil vs Transparent Labs: Frequently Asked Questions
Heart and Soil vs Transparent Labs
Side-by-side, Heart and Soil against Transparent Labs read very similarly. They look like cousins at the same “premium grass-fed” family reunion. Heart & Soil leans into Australian source whey, full transparency, and NSF Certified for Sport. Looking at Transparent Labs, nearly identical: Informed Choice, Informed Protein, publicly available reports.
Both are premium priced. Both offer advertised transparency. In this Heart and Soil vs Transparent Labs breakdown, it’s about examining the quality and claims made about their whey: grass-fed protein.
This comparison uses only my final Heart & Soil and Transparent Labs reviews, plus the shared tables. No extra gossip, no outside claims. Just receipts.
Check out my original, full written reviews of brands. The Transparent Labs Protein review, here. Heart and Soil protein review here.
Heart and Soil vs Transparent Labs TL;DR
Quick Answer — Which Is Better: Heart and Soil or Transparent Labs?
For muscle-building performance, Transparent Labs is the better buy. It delivers more protein per scoop, higher verified BCAAs, and better flavor at a lower price per serving, backed by Informed Protein and Informed Choice. Even without those certifications, Heart & Soil earns respect for its clean ingredient list, which does not list “Natural and Artificial Flavors.” The majority of Heart and Soil’s claims are verified by NSF Certified for Sport.
Where these two brands fail is transparency; the one thing both advertise is grass-fed whey… Without verification by an independent party. If you want a whole-foods-based protein powder, Heart & Soil is your lane. If you want a protein that will help you reach your health and fitness goals, Transparent Labs wins.
Winner: Transparent Labs.
Help support these unbiased reviews by using my Amazon affiliate links for either brand. Buy Transparent Labs here and Heart and Soil here.
How I Approach This Heart and Soil vs Transparent Labs Comparison
🌟 If you found my Heart and Soil vs Transparent Labs comparison helpful, you’ll feel right at home over on my YouTube channel — where I put supplements on trial with the same straight-shooting approach. You can join me there anytime: https://www.youtube.com/@jkremmerfitness
👥 As a certified strength and conditioning specialist (NSCA) and sports nutrition expert (CISSN), I built this platform to give lifters and everyday athletes the kind of reviews we all wish existed — the kind that tell the truth. This Heart and Soil vs Transparent Labs comparison I publish comes from my original reviews. No brand influence. No glossy marketing buzzwords.
📖 My work isn’t about loyalty to labels — it’s about loyalty to the people buying them. I evaluate what matters: ingredient integrity, testing transparency, sourcing credibility, protein quality, and the experience in the shaker bottle. If a product falls short, you’ll hear about it. If it earns praise, it’s because it deserves it.
💼Whether it’s this Heart and Soil vs Transparent Labs comparison or any other deep dive I write, the mission stays the same: clear answers, honest analysis, and practical insight so you always know exactly what you’re paying for — and why. Because supplement companies have enough cheerleaders. You deserve a critic who’s on your side.
🔍 A quick note on links: some products in my reviews, including this Heart and Soil vs Transparent Labs comparison, may include Amazon affiliate links. If you choose to purchase through them, I may earn a small commission — at zero cost to you. That support allows me to keep every review 100% independent and fully transparent.
Protein Transparency & Amino Integrity
Transparent Labs is the only one of the two that actually lets you see what every gram of protein is doing. When asked, they provided a full amino profile per serving: about 2.8–2.9 grams of leucine and 5.9 grams of total BCAAs in their grass-fed whey, with the numbers backed by Informed Protein. That means their protein content—and the amino distribution—has been audited by someone other than the marketing department.
Heart & Soil publishes leucine (2.5 g) and total BCAAs (4.7 g) per serving, but stops there. No full amino map, no third-party amino assay. The bigger story is in the fractions. Based on their own disclosed fraction data, Heart & Soil’s “whey” protein doesn’t behave like a normal grass-fed concentrate.
| Bioactive Fractions Comparison | ||
| Bioactive Whey Fraction | Standard Range (%) | Heart and Soil (%)Conversion to % (24,000 mg protein) |
| Beta-Lactoglobulin | 54-58% | 11324mg (47%) |
| Alpha-Lactalbumin | 14-17% | 3518mg(14.7%) |
| Glycomacropeptide | .1-2% | None Listed |
| Immunoglobulin | 8-10% | 6746mg(28%) |
| Bovine Serum Albumin (BSA) | 3-5% | 73mg(.3%) |
| Lactoferrin | 1.7% (by volume) | 68mg(~0.28%) |
| Glutathione | — | Not LIsted |
| Source for standard values: AGN Roots – Whey Protein Fractions Breakdown | ||
The above-listed numbers are not an accident. The colostrum-enriched whey fraction profile advertised by Heart and Soil exceeds the standard range. Is that a problem? Yes and No.
If you’re looking for a protein powder that will help support your immune system and speed recovery from exercise, it is beneficial. Then again, you should be buying colostrum. Suppose your goal is to stimulate muscle protein synthesis post-workout. In that case, the listed leucine amount is most likely the true leucine content.
Heart & Soil still delivers about 24 g of “protein” on paper. Here’s the problem: it is third-party verified by either Informed Protein or Labdoor. Plus, the whey fraction profile is enriched. Meaning, collostrum is not listed as an ingredient, and it’s being counted as protein. Not very transparent for a brand advertising transparency.
Micro conclusion: Even though Transparent Labs doesn’t advertise whey fractions, the protein content per serving is more accurate. That alone has its own issues.
Does Either Brand Show Signs of Amino Spiking?
Let’s separate two very different issues: classic amino spiking and modern label games.
Heart & Soil first. No free-form amino acids are hiding in the ingredient list, no proprietary “protein blends,” and no nitrogen-padding suspects like glycine or taurine. On the surface, this is not amino spiking in the traditional scammy sense. As discussed in the previous section, the major concern is the number of immunoglobulins outside the standard range of 8% to 10%. 28% of the “protein” is immunoglobulins. Is it fair to say that you are only getting 17g of true protein? At this point, it’s not amino spiking in the typical sense; the better term is amino dilution.
Transparent Labs goes the other way: Informed Protein confirm that the product is not padded with cheap aminos and that the formula is free from classic spiking. However, if you reverse-engineer the %DV, the label becomes interesting. A serving contains 28 g of protein, which is 48% of the Daily Value. That DV math works out to roughly 25 g of usable protein, leaving about 3 g of nitrogen-bearing “extras” in the scoop.
In other words, Transparent Labs is amino-spiked. Informed Protein has verified the amino acid profile and protein quality. List 28g is inflated by 3 grams of nitrogen filler.
Winner: Neither proteins walk away the winner. Heart and Soil offers protein dilution. Transparent Labs protein integrity is verified, yet it offers 3 grams of nitrogen filler. Transparent Labs is the superior protein post-workout.
Third-Party Testing: Who’s Actually Verified?
Seeing that NSF Certified for Sport on Heart and Soil carries significant weight. Here’s why: it verifies Non-GMO, no added hormones, no soy, no banned substances, and no added hormones on top of the high standards associated with NSF: ingredient and production cleanliness. That’s impressive.
Transparent Labs went a different route, but still achieved similar results. For banned substances and protein quality, Transparent Labs is verified by Informed Choice and Informed Protein. Transparent Labs offers a Certificate of Analysis from Dyadd Labs, which is readily available upon providing the lot number.
Here’s the one thing that isn’t verified by these third-party audit checks advertised by both brands: grass-fed claims.
Winner: Anyone purchasing either brand based on ingredient quality. It’s impressive that Heart and Soil offers the NSF Sport badge; unfortunately, it doesn’t verify the protein quality or amino acid profile. Transparent Labs is the winner.
Sourcing Transparency & Label Honesty
Both brands love the words “grass-fed.” Neither brings the paperwork that actually proves it.
Heart & Soil says their whey comes from 100% grass-fed Australian dairy and emphasizes cold processing and plastic-free packaging. What’s missing is any independent confirmation of the grazing story—no PCAS certification, no farm-level traceability, no third-party welfare or pasture audit. As found earlier in this Heart and Soil vs Transparent Labs comparison, Heart and Soil has an abnormally high amount of immunoglobulins. That’s not normal for a self-proclaimed grass-fed whey.
Transparent Labs also leans hard into “sourced from grass-fed American dairy cattle, raised without the use of growth hormones or hormonal agents.” Problem? It could have been verified as USDA Organic. When examining the amino acid profile against AGN Roots, Transparent Labs appears to be a low-quality grass-fed whey. Or worse, a blend of conventional with grass-fed whey. Plus, there is no sourcing information on where the whey is sourced from in America.
Winner: Tie. Transparent Labs protein quality has been verified as legit. Neither brand looks like the type of quality grass-fed protein. Both brands avoid certification as organic in their respective areas.
Ingredients & Sweeteners — Clean or Just “Clean Looking”?
If you’re looking for a protein powder with minimal ingredients, you will love Heart & Soil’s formula. Only “protein” and natural sweeteners. The unflavored version is simply whey concentrate from their claimed grass-fed Australian dairy source. The Chocolate Sea Salt flavor adds organic maple syrup, organic cacao, and sea salt. No gums, no lecithins, no artificial sweeteners, no flavor chemistry gymnastics. On paper, it reads like food, not a dessert lab project.
Transparent Labs is still miles cleaner than the average commercial whey, but it is clearly engineered for taste. Their Milk Chocolate flavor, for example, uses grass-fed whey isolate as the base, then adds cocoa powder, natural flavors, salt, and stevia extract. There are no artificial sweeteners, dyes, or fillers.
Winner: Tie. Even though Heart and Soil offers a barebones ingredient list. The brand is not transparent about its colostrum-forward formulation. Transparent Labs has “Natural and Artificial Flavors” listed. At this point, neither brand stands out for ingredient transparency.
Heavy Metals & Prop 65 Concerns
This is one area where both brands behave like adults.
Heart & Soil’s NSF Certified for Sport process includes screening for heavy metals and other contaminants. Their posted lab data show lead, arsenic, cadmium, and mercury well below California Proposition 65’s strict thresholds, with mercury not detected at all in the lot tested. There is no Prop 65 warning attached to the product, and the numbers justify that absence.
Transparent Labs pushed their grass-fed isolate through Labdoor’s toxicology testing. That report confirms the product passes contaminant screening without red flags and does not require a Prop 65 warning. Combine that with their third-party certifications, and you have a protein powder that’s been looked at from more than one angle.
Winner: Tie. Neither brand has a Prop 65 Warning, and both brands have readily accessible toxicology reports.
Taste & Mixability — Which One Drinks Better?
Heart & Soil drinks like what it is: a minimally processed whey concentrate with no emulsifiers. The unflavored version brings a mild, nutty dairy note that works fine in smoothies and mixes reasonably well in a shaker bottle—but you will see the occasional dry clump cruising the top. The Chocolate Sea Salt option tastes better once you dig past the top layer.
And that’s the catch: the cardboard canister looks eco-friendly, but it doesn’t protect freshness. Those first scoops taste like they spent quality time with warehouse air before you did. Heart & Soil removed plastics so well that they also removed flavor stability. Air exposure isn’t a tasting note lifters are after.
Transparent Labs, on the other hand, clearly invested in flavor development. Offering multiple flavors without using artificial sweeteners. Offerings such as Chocolate, French Vanilla, and Cinnamon French Toast are consistently praised.
In my own testing, Milk Chocolate delivered a rich shake with no noticeable stevia aftertaste—a rare feat. It mixes easily in water, even better in milk, and the only critique is the occasional “cake bit” that dissolves after a few sips.
Winner: Heart and Soil is for the anti-artificial, I-only-want-natural-ingredients crowd. If you don’t mind stevia and want some variety, Transparent Labs is a winner. Based solely on product freshness, Transparent Labs is the winner.
Nutrition Facts & Protein Density Comparison
Here’s how the numbers line up when you compare the unflavored Heart & Soil and a performance flavor from Transparent Labs (French Vanilla):
Heart and Soil vs Transparent Labs: Which Whey Protein Powder Is Better for Muscle Building?
| Heart & Soil vs Transparent Labs: Which Whey Protein Powder Is Better for Muscle Building? | ||||
| Key Differences & Comparison Metrics | Heart and Soil Protein Unflavored | %DV | Transparent Labs French Vanilla | %DV |
| Leucine | 2.5g | 2.8g (Informed Protein Verified) | ||
| Leucine Percent | 10.41% | 10.00% | ||
| Total BCAAs | 4.7g | 5.9g | ||
| Protein per Serving | 24g | 48% | 28g | 48% |
| Protein Density | 80% | 75% | ||
| Carbs per Serving | 2g | 1% | 0g | 0% |
| Fiber per Serving | 0g | 0% | 0g | 0% |
| Total Sugars | 1g | — | 1g | — |
| Calories | 110 kcal | 130 kcal | ||
| Serving Size | 30g | 33.3g | ||
| Number of Servings | 30 | 30 | ||
| *Price(December 2025) | $73.00 | $59.99 | ||
| Price per Serving | $2.43 | $2.00 | ||
Heart & Soil’s unflavored whey shows an 80% protein density on the label: 24 g protein in a 30 g scoop. But remember, this is a colostrum-enriched formula where a large share of that “protein” is immunoglobulins, not high-leucine whey.
Transparent Labs lists 28 g of protein per 33.3 g scoop and averages 78–79% protein across flavors in the full lineup. Yet once you factor in the %DV math and recognize about 3 g of that serving is nitrogen-bearing flavor system rather than usable protein, you’re really looking at closer to 25 g of protein in that scoop—about 75% by weight.
Winner: Transparent Labs. Even after calculating usable protein, you have a better sense of how much true protein you are getting per serving, 25 grams. Heart & Soil appears to have the edge in protein percentage per serving at 80%. Then you remember… It’s enriched with colostrum, and the protein quality has not been verified.
Price per Serving — Which Is the Better Value?
From the comparison table:
- Heart & Soil: $73.00 for 30 servings ≈ $2.43 per serving
- Transparent Labs: $59.99 for 30 servings ≈ $2.00 per serving
With Heart & Soil, you are being charged a premium plus price per scoop at over $73. You do receive the NSF Sport certification for banned substances. Then you examine Transparent Labs’ offering: cheaper with verified protein quality and screened for banned substances.
Winner: Transparent Labs. If your goal is to build muscle, Transparent Labs. If you’re more focused on general health and well-being, it’s still tough to recommend Heart & Soil protein at that price point.
Who Each Brand Is Best For
Heart and Soil Is Best For:
- People who want a functional food shake
- Buyers who prioritize NSF certification
- Immune-supporting protein powder with higher-than-normal whey fractions
- Shoppers who want only natural ingredients in their protein powder
Transparent Labs Is Best For:
- Lifters and athletes who want third-party verified quality
- Buyers who value Informed Protein and Informed Choice
- Daily protein shake drinkers who care about flavor, mixability, and variety
- Anyone who wants a high-protein, low-filler protein shake
- Great value based on the price point for protein and third-party verification
Help support these unbiased reviews by using my Amazon affiliate links for either brand. Buy Transparent Labs here and Heart and Soil here.
Final Verdict — Should You Buy Heart and Soil or Transparent Labs?
In this Heart and Soil vs Transparent Labs protein comparison, be aware of all the marketing. What are you left with? One brand offers a colostrum-enriched protein powder. The other brand offers a standard whey protein with third-party testing. Now let’s reintroduce the stories that both brands are trying to sell you.
Neither Heart and Soil nor Transparent Labs is verified as grass-fed. Yup, there are a handful of nationally recognized third-party testers on the packaging. But the most common PCAS or USDA Organic is nowhere to be found to verify the grass-fed claims.
Both offer a minimalist ingredient list. One brand decided to count colostrum as protein. The other brand decided to add nitrogen fillers hidden behind “Artificial and Natural Flavors.”
The biggest concern is whether you are truly getting a great protein for what you are paying. That’s a personal choice. So here’s the lane choice.
If you’re hiring your protein powder to support an immune-friendly, whole-food lifestyle and you’re comfortable paying a premium for colostrum-forward nutrition, Heart & Soil can justify a spot in your pantry. Suppose you’re hiring your protein to build muscle as efficiently and transparently as possible. In that case, Transparent Labs is the smarter buy in this matchup.
Winner. Transparent Labs
Help support these unbiased reviews by using my Amazon affiliate links for either brand. Buy Transparent Labs here and Heart and Soil here.
Heart and Soil vs Transparent Labs: Frequently Asked Questions
Not for pure muscle building. Heart & Soil is a solid colostrum-enriched whey with strong safety credentials. Still, a big share of its “protein” lives in immune fractions, not leucine-heavy whey. Transparent Labs offers more verified leucine and BCAAs per serving, better third-party documentation on protein integrity, and a lower price per scoop, making it the better choice for most lifters.
Not in the classic sense. Heart & Soil doesn’t hide cheap amino acids or nitrogen powders in the ingredient list. The concern is composition, not deception: about 28% of the protein is immunoglobulins—far above the natural range—so you get more immune support but less muscle-focused whey protein per gram than a standard grass-fed concentrate.
Not in the sloppy, taurine-dumping way shady brands do. But their label math doesn’t match the muscle-building math.
That 28 g “protein” serving equals 48% DV, which maps to about 25 g of complete whey, not 28. The missing 3g is hidden under “Natural and Artificial Flavors,” which is industry code for nitrogen padding.
So yes—it’s technically amino-spiked. It’s just third-party verified amino spiking.
Yes. Transparent Labs’ grass-fed whey isolate is certified by Informed Protein and Informed Choice and has been evaluated by Labdoor. Those certifications confirm label accuracy, absence of banned substances, and a clean toxicology profile. The testing is real; the grass-fed story, however, still lacks an independent USDA Organic or Truly Grass Fed badge.
Yes. Even after you adjust for the 3 g gap between label protein and usable protein revealed by the %DV, Transparent Labs still delivers a high dose of leucine and BCAAs per serving with a whey isolate base. That makes it more efficient for muscle protein synthesis than a colostrum-heavy concentrate like Heart & Soil, especially for lifters who pay attention to grams and thresholds.
Transparent Labs mixes better for most people. Its isolate base, flavor system, and use of stevia produce smooth shakes in water or milk with minimal clumping and strong flavor. Heart & Soil mixes adequately for a gum-free concentrate. Still, it can leave a few stubborn clumps and lose some flavor quality at the top of the tub due to its cardboard packaging.
Yes. Heart & Soil’s NSF Certified for Sport process includes heavy-metal and contaminant testing, and their COAs show lead, arsenic, cadmium, and mercury well below Proposition 65 thresholds, with no warning label required. From a toxicology standpoint, it behaves like a responsible daily-use protein powder.
Choose Heart & Soil if you care most about whole-food-style ingredients, colostrum-enhanced immune support, and NSF Certified for Sport safety, and you’re willing to pay extra for that profile. Choose Transparent Labs if your priority is efficient muscle-building protein with strong third-party verification, better flavor, and more protein per dollar.
Meet James, a decade-long devotee to transforming fitness journeys, both in-person and online. As a virtual and remote personal trainer, he merges passion with expertise to deliver unparalleled fitness guidance. James isn’t just about workouts; he’s a protein powder aficionado, always on the hunt for the next best blend to enhance your gains.
Holding Bachelor’s Degrees in Exercise Sports Science and Pre-Law, James’s academic foundation is as solid as his fitness regimens. His certifications read like a who’s who of fitness excellence: NSCA (CSCS), Precision Nutrition Level 1, Online Trainer Academy (OTA), C-ISSN, and more. Whether you’re looking to overhaul your fitness routine, find the perfect protein, or navigate the intersection of wellness and law, James is your go-to guide for all things fitness.
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