Is Thorne L-glutamine NSF certified?
Latest price check:
Partly: 1 of the 2 Thorne L-glutamine packages we track, not all of them. NSF lists a specific package against each certificate, and a certificate is what NSF actually stands behind, so a package the listing does not name is treated as unconfirmed rather than certified. Every row below was checked against NSF's directory, and where a listing names the product its ID is shown.
NSF files the 504 g powder tub under two listings, 1509493 and 1204614, which print different scoop weights; the first prints the tub’s own panel, and the row here rests on it. No listing names the capsules.
| Product | Package | Named by an NSF listing? | Certificate |
|---|---|---|---|
| L-Glutamine Powder (90 servings) buy | 90 servings | Yes | 1509493 |
| L-Glutamine (90 capsules) buy | 90 capsules | Listing names another form | 1509493 |
What the listings say
The records here rest on 1 Certified for Sport listing (1509493). NSF records some brands under more than one spelling, so a search on the brand name alone can miss a listing; ours are found from a full read of the directory, then opened one by one.
What each product page shows
Every Thorne product we track, across all categories: Is Thorne third party tested?
Where to buy: the L-glutamine shortlist
The pick is the cheapest product that clears four bars:
- certified, and named at the exact package where the certifier names packages
- no adverse finding on record
- a price its retailer let us read recently
- no more than a year’s supply at the label’s serving
It is ranked per delivered dose where the retailer publishes a delivery rate. Where none does, it is the cheapest such product before delivery, and it says how far the order is from free delivery. It is the same pick the category page shows. Any other answer beside it is the cheapest under a different rule, and its own line names that rule. Answers that cost more than the pick are folded into one line until you open it.
How these lines are chosen
Among 27 products and 27 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of 5g, priced the same way as the figure beside it. It is worked out before that figure is rounded, so it can differ from thirty times it by a few cents. It is not thirty servings where a serving holds more or less than 5g. “Delivery known” ranks only products whose retailer publishes a delivery rate. A cheaper tested product whose rate is not published gets a line of its own. Every package we price, with its delivery terms, is on the L-Glutamine page.
How these lines are chosen
Among 5 products and 5 retailer listings we track; Amazon and Walmart are not included. A month is thirty doses of 5g, priced the same way as the figure beside it. It is worked out before that figure is rounded, so it can differ from thirty times it by a few cents. It is not thirty servings where a serving holds more or less than 5g. “Delivery known” ranks only products whose retailer publishes a delivery rate. Every package we price, with its delivery terms, is on the L-Glutamine page.
A pick has to clear four bars:
- independently certified, and named at the exact package where the certifier names packages
- no recall or failed test
- a price its retailer let us read recently
- no more than a year’s supply at the label’s serving
Where the retailer publishes no delivery rate, the pick is priced before delivery and says so. Nothing we track here clears all of those yet. Each of these misses at least one bar, and says which:
Full comparison of every product in this category: L-Glutamine. Every question we answer: the question index.
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.