$24.97 per container, before delivery
$9.05 per 25g protein, before delivery
Delivery extra; amount unknown
Price checked Nov 13, 2026.
Buy at BulkSupplements.com →Label, prices & sources →OIAM Grass-Fed Whey Isolate, Unflavored (30 servings)
A · NSF Certified for Sport
Label read Nov 4, 2026. Where the data comes from
Whey protein price comparison · Which whey protein brands are third-party tested?
Comparing with a package we do not list? Cost per dose calculator
Cost
$1.37
per 25g protein
$32.99
per container · Core Med Science (direct)
$41.24
for thirty doses of 25g protein, before delivery
Also contains ProHydrolase Protease Enzyme Blend 250 mg and BioCore Optimum Enzyme Blend 110 mg. The price per dose counts protein only.
Amount per serving
20g protein
Servings per container
30
Units needed per dose
1.25 scoops
Doses per container
24.0
Cost per serving
$1.10
- Grams of protein per 24 g scoop as printed on the panel (Protein 20 g). The panel also prints Whey Protein Isolate 23.6 g, ProHydrolase Protease Enzyme Blend 250 mg and BioCore Optimum Enzyme Blend 110 mg; the protein line is what the comparison uses, and the two enzyme blends, each with its own amount, are named on this package's row as a second active that is priced nowhere.
Delivery
Delivery cost
Applies, amount not published
Delivery is NOT free on this order. It is $42.01 short of free delivery (orders of $75.00 or more). This retailer does not publish one fixed delivery rate, so we cannot tell you exactly what delivery will add. Free shipping on orders of $75 or more, from the announcement bar on coremedscience.com, first read August 31, 2026 and read again on September 28, October 17 and November 1, 2026 with the same figure. The shipping policy page itself states no domestic threshold. No rate is published below $75, so delivered cost below it is Unknown and those listings are left out of cheapest-delivered claims.
Cost per dose delivered
at least $1.37
We will not put a number on this. The product price is the least you could pay, not what you will pay. To know the delivered cost in advance, reach the free-delivery threshold or choose a retailer that publishes its rate.
To get free delivery
Spend $42.01 more at Core Med Science (direct)
Delivery policy: Core Med Science (direct), Core Med Science (direct) delivery terms, re-read November 1, 2026 · checked Nov 1, 2026
Buying more than one? Calculate the order
Change the quantity to see the actual container subtotal and whether it reaches the recorded free-delivery threshold.
- Container subtotal
- $32.99
- Delivery
- Unknown
- At least, before delivery & tax
- $32.99
- Per 25g protein, before delivery
- $1.37
30 labeled servings in this order. Comparison doses are a price yardstick, not advice about how much to take.
Delivery is extra. The retailer has not published a rate we can apply.
Unit price checked Nov 13, 2026.
View this package at Core Med Science (direct) →Set the quantity at the retailer. This calculator does not add items to a cart. Uses the recorded unit price with no coupon or quantity discount. Tax is extra. Delivery terms apply to the contiguous US unless the policy says otherwise.
Delivery terms and limits
Free shipping on orders of $75 or more, from the announcement bar on coremedscience.com, first read August 31, 2026 and read again on September 28, October 17 and November 1, 2026 with the same figure. The shipping policy page itself states no domestic threshold. No rate is published below $75, so delivered cost below it is Unknown and those listings are left out of cheapest-delivered claims.
Where to buy
Core Med Science (direct) · lowest recorded available price
Sold on Core Med Science's own store; the label's brand is OIAM.
we earn nothing on this link
checked Nov 13, 2026$32.99Buy
Ordered by price, lowest first, and labeled so you can see what each link earns us. Commission is never an input to that ordering. If the retailer with the lowest current price pays us nothing, that is still the one we send you to. No link on this page earns us anything. Every Buy button is a plain retailer link.
Price history
Latest recorded price: $32.99 at Core Med Science (direct), checked . Unchanged since we started checking on Nov 4 (12 checks).
We check each price about once a day, so this is the range we recorded, not necessarily every price there has been. It says what changed, not why, and nothing about where the price goes next.
Verification level A: Independently certified
This exact package is inside the certifier’s own scope: named on an NSF Certified for Sport listing, or, for USP Verified, the product is in USP’s directory and its mark is on this package’s label. Both audit the manufacturing site and both confirm the label’s own claims against the finished product. They are not interchangeable beyond that: NSF Certified for Sport also screens for substances banned in sport, and USP Verified does not. USP instead checks that the product dissolves and releases within a specified time. What each program checks is set out per program below.
- Current listing found: NSF Certified for Sport.
- Checked USP Verified database on Sep 21, 2026: not listed.
NSF Certified for Sport: currently listed (1742078)
NSF listing 1742078, brand "OIAM", read on Nov 4, 2026, prints Flavor Unflavored, Package Size "720 g" and Serving Size "1 scoop (24 g)". The tub priced here prints Net Weight 720 g and a 24 g scoop, 30 servings, so the listing names the package priced here.
What NSF Certified for Sport checks
| Confirms the label’s dose | Yes |
| Tests for heavy metals / contaminants | Yes |
| Screens for substances banned in sport | Yes |
| Reviews manufacturing | On-site audit |
| Testing frequency | Periodic |
From the program's own published description of its process. Source. “Not stated” means the program does not publish a clear answer. It does not mean no.
USP Verified: checked, not listed
Checked and absent. We read all 16 pages of USP's own Verified Products directory in a browser on Sep 21, 2026: 159 products from 16 brands. We saved a copy. This brand is not in it: not in the directory's brand filter, and not in any product name. USP verifies the products a company submits to it, so this shows only which products were submitted. Not being listed is not a failed test.
Source: USP, USP Verified Products directory, full read, September 21, 2026 · checked Sep 21, 2026Informed Sport: checked, not listed
OIAM is not on the October 2026 Informed Sport product list, which we read on Oct 3, 2026, and this tub's label images print no Informed Sport mark. The list, published by LGC, has 497 brands and 1,887 product lines. Not being listed is not a failed test. Informed Sport certifies what a company submits, so this means only that no product from this brand was on the published list that day.
Source: LGC (Informed Sport), Informed Sport product list, October 2026 PDF, as read October 3, 2026 · checked Oct 3, 2026Informed Choice: checked, not listed
OIAM is not on the October 2026 Informed Choice product list, which we read on Oct 3, 2026. The list, published by LGC, has 201 brands and 853 product lines. Not being listed is not a failed test. Informed Choice certifies what a company submits, so this means only that no product from this brand was on the published list that day.
Source: LGC (Informed Choice), Informed Choice product list, October 2026 PDF, as read October 3, 2026 · checked Oct 3, 2026No laboratory report with figures is recorded here for this product.
Label
Form
powder
Serving size
1 scoop
Active ingredient
Protein: 20g as labeled
Grams of protein per 24 g scoop as printed on the panel (Protein 20 g). The panel also prints Whey Protein Isolate 23.6 g, ProHydrolase Protease Enzyme Blend 250 mg and BioCore Optimum Enzyme Blend 110 mg; the protein line is what the comparison uses, and the two enzyme blends, each with its own amount, are named on this package's row as a second active that is priced nowhere.
Other actives
ProHydrolase Protease Enzyme Blend 250 mg and BioCore Optimum Enzyme Blend 110 mg
Printed on the panel, and not counted in the price per dose.
Vegan
No
Gluten free
Unknown
Allergens
contains milk
Protein source
Whey Protein Isolate 23.6 g, as the panel prints it
Other ingredients
Unknown
Label facts rest on: Core Med Science, Label images: OIAM Protein, Grass-Fed Whey Isolate, Unflavored, 720 g tub, as sold on Core Med Science's store · checked Nov 4, 2026
Other tracked packages
Packages in the same category and format, with the same ingredients. Where we recorded the ingredient forms from the label, only packages with the same forms are shown. Where a category is compared by strength, they also have the same labeled strength. Only current prices are shown, cheapest container first. Prices are before delivery. Formulas, flavors and allergens may differ: check each label. These are browsing options, not recommended substitutes.
$25.99 per container, before delivery
$2.36 per 25g protein, before delivery
Delivery extra; amount unknown
Price checked Nov 13, 2026.
Buy at EVLution Nutrition (direct) →Label, prices & sources →$26.49 per container, before delivery
$2.76 per 25g protein, before delivery
$5.99 delivery
Price checked Nov 13, 2026.
Buy at Optimum Nutrition (direct) →Label, prices & sources →What this rests on: Prices are the last ones we recorded at the retailer named on each product page. Prices go stale, so each page says when it was checked. We track some products, not every one sold, and Amazon and Walmart are not among our stores. Listings and labels are read at the source, and each page links to them. Found an error? Tell us. The full method: How we compare.