Which black seed oil brands are third-party tested?
Buy MAJU Black Seed Oil (8 oz): it costs $37.99 and is the only brand we found that lists dated reports from an outside lab by lot number. No black seed oil is on a USP or NSF list.
By Erin Rose Updated November 5, 2026 How we score
Our recommendation
Buy MAJU Black Seed Oil (8 oz)
Its reports come from ARL, an outside lab, and are dated 2025. They check for microbes, not thymoquinone. MAJU was also one of the 7 oils in ConsumerLab’s 2025 test.
Buy on Amazon · $37.99- Want softgels? Piping Rock Black Seed Oil Softgels posts a sample lab report and costs $0.13 a softgel.
Black seed oils with a lab report you can open (4)
Each of these posts a lab report you can read. Two of them do not name the lab. Tap a badge to open it, where there is a link.
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Our pick
MAJU Black Seed Oil (8 oz)
Lab report: ARLIn ConsumerLab’s 2025 test
Lists its lab reports by lot number. For this 8 oz bottle it shows two lots from 2025 (July and November), both from ARL, an outside lab. They check for microbes only, not thymoquinone or heavy metals.
$0.81 per teaspoon
Buy on Amazon · $37.99 -
Sidr & Stone Ethiopian Black Seed Oil
Posts one lab report from Analytice in France, dated August 5, 2025, for its first batch. It measured 2.67% thymoquinone.
$2.75 per teaspoon
Buy on Amazon · $55.00 -
Piping Rock Black Seed Oil Softgels
Posts a report it calls a typical sample (lot 565284). It lists pass or fail results for microbes and fatty acids and does not name the lab.
$0.13 per softgel
Buy on Amazon · $15.99 -
Sweet Sunnah Black Seed Oil (16 oz)
Lab report, no lab named
Shows a report for one lot (CKY1024, October 2024) in its Amazon photos. It lists thymoquinone and fatty acids and does not name the lab.
$0.42 per teaspoon
Buy on Amazon · $39.99
In ConsumerLab’s 2025 test (5)
ConsumerLab bought these and tested them in 2025. Two of the seven oils it tested failed, and it tells only members which ones.
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Amazing Herbs Black Seed Oil (8 oz)
The brand says it tests every batch but posts no report.
$0.62 per teaspoon
Buy on Amazon · $29.60 -
Zhou Organic Black Seed Oil (8 oz)
Zhou says it tests in its own lab and posts no report.
$0.44 per teaspoon
Buy on Amazon · $20.89 -
Life Extension Black Cumin Seed Oil
Life Extension sends a lab report if you ask for one.
$0.19 per softgel
Buy on Amazon · $11.25 -
Prime Natural Organic Black Seed Oil (8 oz)
We found no lab report from the brand.
$0.81 per teaspoon
Buy on Amazon · $38.99 -
Swanson Black Cumin Seed Oil
We found no lab report for this product from the brand.
$0.21 per capsule
Buy on Amazon · $12.49
Costs use Amazon’s price over the servings on the label, checked November 6, 2026 or later. Liquids are priced per teaspoon (5 mL). Lab reports and brand pages read November 5, 2026.
How do the 18 black seed oils compare on testing?
4 of the 18 products come with a lab report you can open, and 6 were in ConsumerLab’s 2025 test. Only MAJU has both. The other 9 rely on the maker’s word.
| Product | Lab report | ConsumerLab | Cost |
|---|---|---|---|
| MAJU Black Seed Oil (8 oz) | By lot | In test | $0.81 per teaspoon |
| Sidr & Stone Ethiopian Black Seed Oil | One batch | No | $2.75 per teaspoon |
| Piping Rock Black Seed Oil Softgels | One sample | No | $0.13 per softgel |
| Sweet Sunnah Black Seed Oil (16 oz) | One lot | No | $0.42 per teaspoon |
| Amazing Herbs Black Seed Oil (8 oz) | Not posted | In test | $0.62 per teaspoon |
| Zhou Organic Black Seed Oil (8 oz) | Not posted | In test | $0.44 per teaspoon |
| Life Extension Black Cumin Seed Oil | Not posted | In test | $0.19 per softgel |
| Prime Natural Organic Black Seed Oil (8 oz) | Not posted | In test | $0.81 per teaspoon |
| Swanson Black Cumin Seed Oil | Not posted | In test | $0.21 per capsule |
| Mother Nature Organics Black Seed Oil (8 oz) | Not posted | No | $0.73 per teaspoon |
| Mother Nature Organics Black Seed Oil Softgels | Not posted | No | $0.41 per 2 softgels |
| BioNatal Ethiopian Black Seed Oil | Not posted | No | $1.46 per teaspoon |
| Triquetra TQ-Advanced Softgels (5%) | Not posted | No | $0.48 per softgel |
| Nutricost Black Cumin Seed Oil Softgels | Not posted | No | $0.26 per 2 softgels |
| NOW Black Cumin Seed Oil Softgels | Not posted | No | $0.20 per softgel |
| Nature’s Way Organic Black Seed Oil (8 oz) | Not posted | No | $0.64 per teaspoon |
| Heritage Store Organic Black Seed Oil (8 oz) | Not posted | No | $0.62 per teaspoon |
| Health Thru Nutrition Black Seed Oil Softgels | Not posted | No | $0.16 per softgel |
Maker claim only (9)
We checked these 9 too. Each brand’s own words about testing are below. We found no lab report it posts.
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Mother Nature Organics Black Seed Oil (8 oz)
Maker claim only
Maker claim: “Third-Party Tested” on its product page. We found no report.
$0.73 per teaspoon
Buy on Amazon · $34.95 -
Mother Nature Organics Black Seed Oil Softgels
Maker claim only
Maker claim: says each batch goes to an outside lab. We found no report.
$0.41 per 2 softgels
Buy on Amazon · $36.95 -
BioNatal Ethiopian Black Seed Oil
Maker claim only
Maker claim: says Eurofins tests each harvest, but that its lab agreements keep the reports private.
$1.46 per teaspoon
Buy on Amazon · $35.09 -
Triquetra TQ-Advanced Softgels (5%)
Maker claim only
Maker claim: “3rd Party Tested” on Amazon. ConsumerLab tested Triquetra’s 4x product, not this one.
$0.48 per softgel
Buy on Amazon · $28.99 -
Nutricost Black Cumin Seed Oil Softgels
Maker claim only
Maker claim: says an independent, accredited lab tests its products. We found no report.
$0.26 per 2 softgels
Buy on Amazon · $15.50 -
NOW Black Cumin Seed Oil Softgels
Maker claim only
Tests in NOW’s own labs. We found no outside lab report.
$0.20 per softgel
Buy on Amazon · $11.99 -
Nature’s Way Organic Black Seed Oil (8 oz)
Maker claim only
We found no outside lab report from the brand.
$0.64 per teaspoon
Buy on Amazon · $29.99 -
Heritage Store Organic Black Seed Oil (8 oz)
Maker claim only
We found no lab report from the brand.
$0.62 per teaspoon
Buy on Amazon · $28.99 -
Health Thru Nutrition Black Seed Oil Softgels
Maker claim only
We found no lab report from the brand.
$0.16 per softgel
Buy on Amazon · $15.95
Which tested black seed oil costs the least?
Among liquids with a lab report or a ConsumerLab test, Sweet Sunnah Black Seed Oil (16 oz) costs the least, at $0.42 a teaspoon. Our pick, MAJU, costs $0.81 a teaspoon, about 1.9 times as much. You pay more for reports from a named outside lab. Our main black seed oil page picks Sweet Sunnah on price and thymoquinone per teaspoon; this page picks MAJU because its reports are the clearest third-party proof.
Softgels cost less a serving but hold less oil. Among softgels with a lab report or a ConsumerLab test, Piping Rock Black Seed Oil Softgels costs the least, at $0.13 per softgel. One teaspoon of liquid holds about 5 grams of oil; a softgel usually holds 0.5 to 1 gram, so check the milligrams on the label before you compare.
Is any black seed oil USP Verified or NSF certified?
No. We searched USP Verified, NSF/ANSI 173, NSF Certified for Sport, Informed Sport and Informed Choice for black seed, black cumin and Nigella sativa. Not one of them lists a black seed oil. The only NSF listing that names black seed oil is a curcumin softgel that contains some.
That is why the proof on this page is a lab report or ConsumerLab’s test. Those programs list products by name. For black seed oil, a lab report you can open or ConsumerLab’s test is the best proof a buyer can find.
What should a black seed oil lab report check?
A good report names the lab, matches the lot number on your bottle, and covers four things.
- Thymoquinone. This is the compound black seed oil labels count. A report gives it as a percent of the oil. Sidr & Stone’s report found 2.67% in its first batch.
- Microbes. Mold, yeast and bacteria counts. MAJU’s and Piping Rock’s reports cover these.
- Heavy metals. Lead, arsenic, cadmium and mercury. ConsumerLab tested for these; none of the four reports above shows them.
- Freshness. Oil goes rancid with time and heat. Labs measure this with peroxide value. ConsumerLab tested the bottled oils this way.
No report we found covers all four. MAJU’s are the only ones listed by lot number, and they cover microbes only. If thymoquinone matters most to you, ask MAJU or Sidr & Stone for the thymoquinone result for your lot.
What did ConsumerLab find in black seed oil?
ConsumerLab bought 7 black seed oils and tested them in 2025 for thymoquinone, fatty acids and heavy metals, and the bottled oils for freshness. Its review, last updated October 5, 2026, says only 5 of the 7 passed: “two products did not contain their claimed amounts of thymoquinone.”
It names all 7 it tested: Amazing Herbs Black Seed, Life Extension Black Cumin Seed Oil, Maju Superfoods Cold-Pressed Black Seed Oil, Prime Natural Black Seed, Swanson Black Cumin Seed Oil, Triquetra TQ-Advanced Black Seed 4x, Zhou Black Seed Oil. It names brands, not bottle sizes, and tells only members which two failed. 6 of them are on this page. Triquetra’s 4x product is not the 5% softgel we list.
Can you trust the thymoquinone number on the label?
Read it with care. ConsumerLab found two of seven brands short of what they claimed. Labels also print the number in different ways: some give a percent, some give milligrams per teaspoon, and some only say “high thymoquinone”. Prime Natural’s Amazon page prints both 1.5% and 1.7% for the same oil.
A lab report for your lot is the only way to see the real number. Without one, compare labels that print a percent or milligrams, not words like “3X” or “high”. The black seed oil guide explains how to read each format.
Does “third-party tested” on a black seed oil mean anything?
Not by itself. Four brands in the last list say an outside lab tests their oil: Mother Nature Organics, BioNatal, Triquetra and Nutricost. The phrase does not name a lab, a lot or what was checked, so a buyer has no way to check it. Two brands, NOW and Nature’s Way, say they test in their own labs, which is not an outside test.
BioNatal says Eurofins, a large outside lab, tests each harvest, but that its agreements keep the reports private. That may be true, but you cannot see it. Ask any brand for the certificate of analysis that matches your lot number. A real one names the lab and the results.
How do I check my own bottle?
- Find the lot number on the bottle or box.
- Look for the brand’s certificate page, like MAJU’s, or email the brand and ask for the report for that lot.
- Check that the report names the lab and the same lot number, and lists thymoquinone, microbes and heavy metals.
- Store the oil in a cool, dark place and use it before the date on the bottle. Freshness drops once it is open.
Comparing on more than testing? See the best black seed oil, ranked by price per gram and thymoquinone.
Questions
Is MAJU black seed oil third-party tested?
Yes, for microbes. MAJU lists lab reports by lot number on its certificates page. The 8 oz bottle has two, from July and November 2025, both from ARL, an outside lab. They do not list thymoquinone or heavy metals. MAJU is also one of the 7 black seed oils in ConsumerLab’s 2025 test; ConsumerLab tells only members which passed.
Is Amazing Herbs black seed oil third-party tested?
ConsumerLab tested it in 2025; the result is for its members. Amazing Herbs says it tests every batch with an outside lab, but we found no report it posts.
Is Sweet Sunnah black seed oil tested?
Sweet Sunnah shows a report for one lot (CKY1024, made October 2024) in its Amazon photos. It lists thymoquinone and fatty acids. It does not name the lab, and your bottle may be from a newer lot.
Is any black seed oil USP Verified or NSF certified?
No. We searched USP’s, NSF’s and Informed’s lists and found no black seed oil. The one NSF listing that names black seed oil is a curcumin softgel that contains some.
What about ThymoCura?
ThymoCura posts a lab summary on its own site, but the summary says it is “not an original laboratory report.” We did not find ThymoCura for sale on Amazon when we searched on November 5, 2026.
Sources
- ConsumerLab. Black Seed Oil Review (updated October 5, 2026). consumerlab.com
- MAJU Superfoods. Certificates of analysis by lot number, read November 5, 2026. majusuperfoods.com
- Sidr & Stone. Quality assurance and Analytice report (August 5, 2025), read November 5, 2026. sidrstone.com
- Piping Rock. Certificate of analysis for item 14361, read November 5, 2026. pipingrock.com
- NSF International. NSF/ANSI 173 listings searched for black seed, black cumin and Nigella. info.nsf.org
- USP Verified products list. quality-supplements.org
- NIH Dietary Supplement Label Database, black seed oil labels. dsld.od.nih.gov