Verified Purity

Third-Party Lab Report

Every batch of Optimum Shilajit is sent to an independent, accredited laboratory. These are the actual results, published exactly as the lab reported them.

View the original lab report (PDF)
Tested byMotzz Laboratory, Inc.
SampleShilajit Tablets
Report number959603
Date reportedJune 30, 2026
74%Fulvic + humic acids by weight
240mgFulvic acid per serving
57mgHumic acid per serving
4Heavy metals below USP limit

Humic & Fulvic Acids

AnalyteResultPer servingMethod
Fulvic Acid240 mgper 400 mg servingV & B
Humic Acid57 mgper 400 mg servingV & B

Heavy Metals

Each result is shown against the USP <232> daily safe limit for oral supplements. The pink mark is how much of that limit our product actually reaches. Tested by USP <232> ICP-MS.

Arsenic (As)0.2 mcg per serving
1.3% of the limitSafe limit 15 mcg / day
Cadmium (Cd)0.048 mcg per serving
1% of the limitSafe limit 5 mcg / day
Lead (Pb)0.4 mcg per serving
8% of the limitSafe limit 5 mcg / day
Mercury (Hg)None detected
0% of the limitSafe limit 30 mcg / day

"None detected" means the analyte was below the method's reporting limit. Safe limits are the USP <232> permitted daily exposures for oral dietary supplements.

Why fulvic and humic acids make these numbers a non-concern

Optimum carries two things at once that almost no other shilajit can claim together: the heavy metal free in every batch we test, and the highest concentration of fulvic and humic acids. Those two facts are connected, not a coincidence.

Fulvic and humic acids are natural chelators. Their molecular structure latches onto metal ions and holds them. It is the same mechanism that lets these acids carry good minerals into your cells, and it works in the other direction too, keeping the trace metals already bound and inert.

So the tiny amounts shown above are not floating free. They are held by the very compounds that make shilajit worth taking, at levels that already sit far below every safety limit. At that point it is genuinely a non-concern.

We published the full report anyway. You should never have to take a purity claim on faith.

Microbiology

AnalyteResultReporting limitMethod
Aerobic Plate Count10 CFU/g<10 CFU/gAOAC 2015.13
Yeast & MoldNone detected<10 CFU/gAOAC 2014.05
Total Coliform & E. coliNone detected<10 CFU/gAOAC 2018.13

California Proposition 65 Compliant

Every heavy metal in this report was measured far below the State of California Proposition 65 safe-harbor limits. Because there is no exposure above those limits, this product carries no Prop 65 exposure warning.

Optimum is family-owned out of Florida. Results shown are from Motzz Laboratory, Phoenix, Arizona, on the sample submitted. A full signed copy of the chain-of-custody report is available on request.