Shilajit Heavy Metals Test Results 2026 — Lab Data Compared Across 4 Brands

Shilajit forms over centuries as organic matter becomes compressed beneath mountain rock formations in the Himalayas, Altai, and other high-altitude ranges. That geological process is what creates shilajit's uniquely dense mineral profile — but it is also why heavy metals are a legitimate concern. The same rock environment that concentrates fulvic acid, iron, and trace minerals also concentrates lead, arsenic, cadmium, and mercury. Raw, unprocessed shilajit from unverified sources can carry these metals at levels that exceed safe limits for daily supplementation.

The solution is not to avoid shilajit — it is to buy from brands that test and publish the results. A Certificate of Analysis (COA) from an accredited independent laboratory showing actual measured values is the only way to verify what is actually in the product you are taking. Marketing language like "pure" or "clean" means nothing without a COA to back it up.

This post presents actual batch-specific heavy metals COA data for four brands in our database: Black Lotus Shilajit, Pure Himalayan Shilajit, Natural Shilajit, and Pürblack. Every number below came directly from a named accredited laboratory's Certificate of Analysis. We explain what the numbers mean, put them in context against FDA safety limits, and give you an honest read on which products test cleanest.

How We Got This Data

All heavy metals data in this comparison was sourced directly from each brand's published Certificates of Analysis. We did not commission or conduct independent testing. We present the data as-issued by the laboratories listed — with batch numbers, test dates, and lab names — so you can verify the source documents directly.

Heavy Metals COA Data — All Four Brands

All values are sourced from batch-specific Certificates of Analysis. ND = Not Detected. <LOQ = below the laboratory's Limit of Quantification (detected at trace level but below the threshold for precise measurement).

What Do These Numbers Mean?

FDA and WHO Safety Limits

The FDA sets action levels for heavy metals in dietary supplements. A product exceeding these thresholds can be subject to enforcement action. The WHO and USP <232> guidelines set similar or more conservative thresholds for certain metals. The FDA limits relevant to this comparison are:

Why Raw Resin Has Higher Heavy Metals Than Processed Forms

Across all four brands, a consistent pattern emerges: raw resin contains higher heavy metals concentrations than processed forms like tablets and capsules. This is expected and normal. Processing shilajit — washing, filtration, purification, and encapsulation — removes some proportion of heavy metals alongside other mineral content. A tablet or capsule uses a processed shilajit powder extract, which has gone through additional refinement steps compared to raw resin.

This does not make raw resin unsafe — all results above are within FDA limits. It means that if minimizing heavy metals exposure is your primary concern, processed forms (tablets, capsules) are the better choice within any given brand.

Why Mercury ND Is the Most Important Result

Of the four heavy metals tested, mercury is the most acutely toxic — particularly in its methylmercury form, which bioaccumulates in the nervous system. A result of "ND" (not detected) for mercury means the lab's instruments could not detect mercury at or above their limit of detection — the most reassuring possible outcome. Three of the four brands achieve mercury ND across most or all products tested. Pürblack Research Grade and White Rabbit Vive show 0.001 mg/kg — vanishingly small and well within limits. Natural Shilajit resin shows 0.029 ppm — still within the FDA limit of 3 ppm, but worth noting as the highest mercury reading in this comparison.

ppm vs. mcg/serving — What's the Difference?

ppm (parts per million)measures the concentration of a metal in the product — how many milligrams of that metal exist per kilogram of product. It tells you how "dense" the contamination is in the material.

mcg per servingtells you how much of that metal you actually ingest per dose. This is what determines your actual exposure. Pure Himalayan reports in mcg/200mg serving — a more consumer-relevant format because it directly answers the question "how much am I getting per day?" For example, Pure Himalayan tablets show Lead at 0.095 mcg per 200mg serving. The FDA's Provisional Total Tolerable Intake (PTTI) for lead in adults is approximately 75 mcg/day — making 0.095 mcg per serving negligible relative to that threshold.

Which Brand Has the Cleanest Heavy Metals?

With all four brands passing FDA safety limits, this becomes a question of relative performance rather than safety. Here is an honest read:

What This Means for Memorial Sloan Kettering's Warning

Memorial Sloan Kettering Cancer Center flags heavy metal contamination as a documented safety concern with shilajit — and that concern is legitimate. Unverified shilajit products from uncontrolled sources can and do contain heavy metals at dangerous levels. Published case reports of heavy metal toxicity from shilajit products exist in the medical literature.

The data in this article represents exactly the kind of verification MSK recommends consumers look for. MSK's concern is not that shilajit is inherently dangerous — it is that most products on the market cannot prove they are safe because they have not been independently tested. The four brands compared here have done that testing and published the results.

A buyer who chooses any of these four brands and verifies the COA numbers against the batches they receive is doing exactly what responsible supplement use looks like. That does not make these products MSK-approved or medically recommended — it means they have addressed the specific documentation gap that MSK identifies as the root of the heavy metals risk.

All Four Brands — With Lab-Verified Heavy Metals Data

Every brand below has published batch-specific COA heavy metals data from a named independent laboratory. Links are affiliate links — commissions at no extra cost to you.

Conclusion

Heavy metals in shilajit are a real concern — and the data above shows they are also a manageable one, for brands that invest in independent testing. Every product in this comparison passes FDA dietary supplement limits for lead, arsenic, cadmium, and mercury. The spread between brands reflects the natural variation in source geology, purification method, and product form — not a division between safe and unsafe.

The practical guidance is simple: always verify the COA before buying, choose processed forms if heavy metals are your primary concern, and treat any brand that cannot produce batch-specific lab data with measured values as unverified — regardless of what the label claims.

For the full database of COA documentation across all brands we track, see our Lab Data & COAs page. For a deeper look at how to read and interpret a heavy metals panel, see our guide on how to read a shilajit COA.

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