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Sunday Natural L-Theanine 100mg (Green Tea Extract)

Lab verifiedLab: GBAReport: 22 May 2026Batch: 5551

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Lab report

Lab-test status
Lab verified22 May 2026Report
Lab
GBA Gesellschaft für Bioanalytik mbH, Hamburg
GBA Sunday Natural L-Theanine 100mg (Green Tea Extract) 5551 (May 2026)
Batch
5551 (May 2026)
Report date
22 May 2026
Heavy metals (mg/kg)
Pb <0.020 (well under the EU limit or below detection)Cd <0.010 (well under the EU limit or below detection)Hg <0.010 (well under the EU limit or below detection)As 0.057 (no EU limit)
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
L-Theanine
Brand
Sunday Natural
Testing rule for this category
Third-party testing preferred
Status detail
An independent lab report or certification is referenced for this product.
Reviewer notes
GBA numeric 22 May 2026: Pb <0.020, Cd <0.010, Hg <0.010, As 0.057 mg/kg.
Product page
Sunday Natural (sunday-natural.co.uk)

⚠ 1 red flag

  • Sample sent in by the brand: check the batch number on your pack.

Purity & biohacker panel

Facts only, no scores. Lab: GBA Gesellschaft für Bioanalytik mbH, Hamburg · GBA Sunday Natural L-Theanine 100mg (Green Tea Extract) 5551 (May 2026) · batch 5551 (May 2026) · dated 2026-05-22 (report age 5 months).

Cleanliness checks

Lead (Pb)Yes
<0.020 mg/kg · lab report
Cadmium (Cd)Yes
<0.010 mg/kg · lab report
Mercury (Hg)Yes
<0.010 mg/kg · lab report
Arsenic (As)Yes
0.057 mg/kg · lab report

Biohacker parameters

Report age
5 months · lab report

Unknown = not published or not verifiable. Prices from the linked seller page, checked 2 Nov 2026.

Testing evidence

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