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Independent practical test

Quality. Black and white.

Testsieger Online evaluated our Uthever® NMN in a practical test – from packaging to price-performance ratio.

Testsiegel
  • First Impressions & Packaging
  • Product quality
  • Value for money
  • Product-specific criteria
  • Customer Satisfaction & Service

>99% purity

The test confirms high-purity, certified NMN – a significant advantage over less pure products on the market.

No additives

Completely free from additives, fillers, and artificial ingredients - explicitly highlighted as positive in the test.

Independently audited

Quality assurance through tests in accredited laboratories - considered an important trust factor by the test team.

4.6 / 5 Stars

Average customer rating on Amazon at the time of testing - the price-performance ratio is considered competitive.

Lab-tested. Verified.

Lab-tested. Verified.

Regardless of practical testing, we analyze every batch in a DAkkS-accredited laboratory (DIN EN ISO/IEC 17025). The current test report from Limbach Analytics GmbH confirms:

99.1% measured NMN content Test Report L-25-00272, ¹H-NMR Method

„We can recommend this product without reservation.“

- Conclusion of the test report, testsieger-online.de (January 2026)

What was tested: The independent test portal Testsieger Online subjected our NMN to a comprehensive practical test in January 2026 – from unboxing to evaluating quality, price, and service.

The testers were impressed by their first impression: The product arrived securely packaged, and the resealable pouch reliably protects the powder from light and moisture. Regarding quality, the report highlights the certified purity of over 99%, testing in accredited laboratories, and the complete absence of additives. The test rates the price-performance ratio as balanced and competitive; the compact, resource-saving packaging with complete manufacturer labeling is also positively assessed.

The test report makes no statement about the mode of action.

Advantages in the Test

  • High-purity, additive-free NMN
  • Supports NAD+ for Energy & Vitality
  • Independent quality tests
  • Competitive price
  • Positive Customer Reviews
To the productRead the full test report

Source: testsieger-online.de, review "Nicotinamide Mononucleotide from Longevity Life.", published January 2026. The NMN Bag from LongevityLife was tested. Test criteria and full results can be found in the linked report.