Is Optimum Nutrition third party tested?
Partly: 9 of the 18 products we track. Of the 18 Optimum Nutrition products we track across 4 categories, 9 are listed by a program that names no package (Informed Choice), 2 appear in no database we searched and 7 match a listing not settled either way.
No certifier lists a whole brand. NSF names specific packages on each listing. Informed Choice lists a product and names no package size. So “Optimum Nutrition is third party tested” can be true of one product while the line beside it has no listing. Each row below says which kind of listing it has, if any.
Creatine Monohydrate
0 of 8 named at the exact package, 3 certified with no package named. Size by size, with what each listing names
| Product | Named by a certifier? | Cost per dose, before delivery | Listing |
|---|---|---|---|
| Micronized Creatine Powder, Unflavored (1.2 kg) buy | Product listed, no package named | $0.225 13th cheapest of 50 powders | Informed Choice |
| Micronized Creatine Powder, Unflavored (600 g) (last known price, Oct 7) check price | Product listed, no package named | $0.25 20th cheapest of 50 powders | Informed Choice |
| Micronized Creatine Powder, Unflavored (300 g) buy | Product listed, no package named | $0.341 32nd cheapest of 50 powders | Informed Choice |
| Creatine Monohydrate Gummies, Pineapple (105 gummies) buy | No listing found | $1.14 4th cheapest of 9 gummies and chewables | None found |
| Micronized Creatine Capsules, Unflavored (300 capsules) buy | Not settled | $0.767 6th cheapest of 12 capsules, softgels and tablets | Unknown |
| Micronized Creatine Capsules, Unflavored (200 capsules) buy | Not settled | $0.80 7th cheapest of 12 capsules, softgels and tablets | Unknown |
| Micronized Creatine Capsules, Unflavored (100 capsules) buy | Not settled | $0.92 tied for 8th cheapest of 12 capsules, softgels and tablets | Unknown |
| Micronized Creatine Stick Packs, Unflavored (24 stick packs) buy | Not settled | $1.04 47th cheapest of 50 powders | Unknown |
Magnesium Glycinate
0 of 1 named at the exact package.
| Product | Named by a certifier? | Cost per dose, before delivery | Listing |
|---|---|---|---|
| Magnesium Glycinate Capsules (90 capsules) buy | No listing found | $0.555 16th cheapest of 22 capsules, softgels and tablets | None found |
Whey Protein
0 of 7 named at the exact package, 4 certified with no package named.
| Product | Named by a certifier? | Cost per dose, before delivery | Listing |
|---|---|---|---|
| Gold Standard 100% Whey, Double Rich Chocolate (10.18 lb) buy | Product listed, no package named | $1.61 4th cheapest of 40 | Informed Choice |
| Gold Standard 100% Whey, Double Rich Chocolate (5.05 lb) buy | Product listed, no package named | $1.86 12th cheapest of 40 | Informed Choice |
| Gold Standard 100% Whey, Double Rich Chocolate (1.98 lb) buy | Product listed, no package named | $2.68 29th cheapest of 40 | Informed Choice |
| Gold Standard 100% Whey, Double Rich Chocolate (0.68 lb) buy | Product listed, no package named | $2.76 30th cheapest of 40 | Informed Choice |
| Gold Standard 100% Isolate, Chocolate Bliss (3 lb) buy | Not settled | $2.35 22nd cheapest of 40 | Unknown |
| Platinum Hydrowhey, Turbo Chocolate (3.61 lb) buy | Not settled | $2.86 31st cheapest of 40 | Unknown |
| Platinum Hydrowhey, Turbo Chocolate (1.8 lb) buy | Not settled | $3.10 34th cheapest of 40 | Unknown |
Plant Protein
0 of 2 named at the exact package, 2 certified with no package named.
| Product | Named by a certifier? | Cost per dose, before delivery | Listing |
|---|---|---|---|
| Gold Standard 100% Plant Protein, Rich Chocolate Fudge (1.76 lb) buy | Product listed, no package named | $2.08 9th cheapest of 23 | Informed Choice |
| Gold Standard 100% Plant Protein, Rich Chocolate Fudge (1.06 lb) (last known price, Oct 14) check price | Product listed, no package named | $2.47 15th cheapest of 23 | Informed Choice |
No listing is an absence in a database, not a failed test: these programs certify what a company submits to them. NSF Certified for Sport, the Informed programs' published product lists, the IFOS directory and USP's directory are each read in full. Each product page names the day.
Every category we compare: the home page. Every question we answer: the question index.
What this rests on: prices we last recorded at the retailer named on each product page, which go stale, and each page says when it was checked; the products we track, not every product sold, and Amazon and Walmart are not among the stores; listings and labels read at the source, each linked from the page. Found an error? Tell us. The full method: How we compare.