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Mighton’s Plain Sea Moss Gel (St Lucian gold sea moss) 300 ml

Partial reportLab: M.S. LaboratoriesReport: 10 Aug 2026

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MineralsUK sellerPartial report
A recent independent report exists, but it is partial: pass/fail only, no batch number, or some tests outside the lab’s accreditation

Score Not enough data How we score →

Evidence note: Partial report: no batch number, and the metals were subcontracted outside the lab’s UKAS accreditation, so we can’t tie the results to the jar you buy.

Lab report

Lab-test status
Partial reportReport
Lab
M.S. Laboratories Ltd, UK (metals subcontracted, outside its UKAS scope)
M.S. Laboratories certificate of analysis CR66566
Batch
Not stated (sample “Sea Moss”)
Report date
10 Aug 2026
Heavy metals (mg/kg)
Pb 0.07 (well under the EU limit or below detection)Cd 0.72 (near the EU limit)Hg 0.01 (well under the EU limit or below detection)As 5.78 (no EU limit)
Fillers
None
Heavy-metal colours: Well under the EU limit (below half) or below detection Near the EU limit (half the limit up to the limit) Over the EU limit Grey: no EU limit (arsenic), not tested, or the lab’s reporting limit is above the EU limitEU 2023/915 limits for food supplements: lead (Pb) 3.0, cadmium (Cd) 1.0, mercury (Hg) 0.10 mg/kg. Values in mg/kg. NT = not tested; c = calculated by us from µg per serving.
Ingredient
Seaweed
Brand
Mighton’s Organic
Testing rule for this category
Third-party heavy-metal testing required
Status detail
A recent independent report exists, but it is partial: pass/fail only, no batch number, or some tests outside the lab’s accreditation
Reviewer notes
Partial report: M.S. Laboratories (UK) certificate CR66566, issued 10 Aug 2026, sample “Sea Moss”: lead 0.07, cadmium 0.72, mercury 0.01 and total arsenic 5.78 mg/kg. No batch number, and the certificate marks all four metals as subcontracted tests outside the lab’s UKAS accreditation. A gel (food), not a capsule. UK seller.
Product page
Mighton’s Organic (mightons.co.uk, UK)

⚠ 3 red flags

  • No batch number on the certificate, and all four metal tests are marked as subcontracted outside the lab’s UKAS accreditation (the brand’s page describes the testing as accredited).
  • Cadmium 0.72 mg/kg and total arsenic 5.78 mg/kg; arsenic was not split into inorganic and organic forms, so the brand’s statement that it is mostly harmless organic arsenic is not shown by this report.
  • No iodine result and no daily serving on the label page.

Purity & biohacker panel

Facts only, no scores. Lab: M.S. Laboratories Ltd, UK (metals subcontracted, outside its UKAS scope) · M.S. Laboratories certificate of analysis CR66566 · batch Not stated (sample “Sea Moss”) · dated 2026-08-10 (report age 3 months).

Cleanliness checks

Free of fillers and additivesYes
Seller describes 100% gold sea moss gel made with spring water · seller page
Full ingredient list publishedYes
Gold sea moss and spring water (seller) · seller page
Lead (Pb)Yes
0.07 mg/kg (measured), EU supplement limit ≤ 3.0 · lab report
Cadmium (Cd)Yes
0.72 mg/kg (measured), EU supplement limit ≤ 1.0 (≤ 3.0 for supplements of at least 80% dried seaweed) · lab report
Mercury (Hg)Yes
0.01 mg/kg (measured), EU supplement limit ≤ 0.10 · lab report
Arsenic (As)Yes
5.78 mg/kg (measured), total arsenic; no EU limit for supplements · lab report
MicrobiologyUnknown
Not in the published report · no source
PesticidesUnknown
Not in the published report · no source
Label accuracy (measured vs claim)Unknown
No iodine result · no source

Biohacker parameters

Form
Gel (fresh, refrigerated jar) · seller page
Dose per serving
Unknown : no daily serving stated on the product page · seller page
Servings per pack
Unknown · no source
Price / cost per daily dose
£9.99 / 300 ml (500 ml £14.99), plus £4.99 chilled postage (seen 26 Oct 2026). No daily serving is stated, so we can’t calculate a daily cost. UK seller; no EU seller found. · seller page
Branded ingredient
Unknown · no source
Sourced / made in
Wild-harvested St Lucian sea moss (seller); handmade in London, UK · seller page
Capsule material
None (gel) · seller page
Allergens
Unknown · no source
Vegan
Yes · seller page
Third-party certifications
Unknown (lab report only) · no source
Report age
3 months · lab report

Unknown = not published or not verifiable. Prices from the linked seller page, checked 26 Oct 2026.

Testing evidence

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