Shilajit Lab Reports Explained: A Complete Guide to Heavy Metals, Fulvic Acid, Minerals & Safety Testing

Himalayan Healing · Sourced from Gilgit-Baltistan, Pakistan · Independently tested by 6 accredited laboratories across 3 countries, 2024–2026

A shilajit Certificate of Analysis is not a single number. It's a document with a specific structure, specific methods, and specific limitations — and most of what's written online about "shilajit testing" never actually opens one.

This guide does, using real reports spanning two years, three countries, and six independent laboratories, to explain exactly what a COA contains, what it can and can't tell you, and how to read one yourself.

1. What Is a Shilajit Lab Report?

A Certificate of Analysis (COA) is a laboratory document reporting the measured results of specific tests performed on a specific sample. A complete one typically includes:

• Sample identification (product name, batch/lot number, serving size)
• Laboratory identity, accreditation, and a unique report number
• The analytical method used for each test
• Chemical analysis (heavy metals, minerals, active compounds)
• Microbiological safety results
• Contaminant screening (mycotoxins, pesticides, PAHs, plant alkaloids, where applicable)
• A signed release, typically from a named analytical services manager or lab director

2. Why Shilajit Requires Laboratory Testing

Shilajit is a naturally sourced material, and natural materials vary. Geological origin, mineral environment, harvest location, purification process, and storage conditions all influence composition.

A responsible testing program verifies both the compounds a manufacturer wants to be present (fulvic acid, minerals) and the ones it needs to rule out or keep within limits (heavy metals, microbial contamination, mycotoxins).

3. Heavy Metals Testing: The Core of Any Shilajit COA

Heavy metal screening typically covers four elements of primary toxicological concern: arsenic, lead, cadmium, and mercury. These are naturally occurring elements, and their presence in a geologically formed material like shilajit is expected — what matters is the measured concentration relative to a recognized limit, not presence alone.

How Labs Measure It: ICP-MS and ICP-OES

ICP-MS (Inductively Coupled Plasma Mass Spectrometry) ionizes a sample and measures elements by mass-to-charge ratio, detecting trace elements down to parts-per-billion levels — the standard method used by Eurofins across the reports referenced here.

ICP-OES (Optical Emission Spectrometry) measures the characteristic light emitted by excited atoms and is well suited to broader multi-element panels, used in the Pakistani laboratory reports referenced below for full elemental profiling.

Finished-Product Results Per Serving

Raw Material Results

Note the visible spread even within arsenic alone — 0.17 to 1.9 mg/kg across four labs and methods on raw material. This is real, expected variation between natural batches and analytical techniques, not a red flag by itself; it's exactly why relying on a single historical test result is weaker evidence than an ongoing testing program across batches and years.

4. Understanding Arsenic in Shilajit: Total vs. Inorganic

This is the single most misunderstood point in shilajit safety discussions. Total arsenic measures every form of arsenic present. Inorganic arsenic — the form bound to oxygen, chlorine, or sulfur rather than carbon — is the form regulatory frameworks actually treat as toxicologically significant; organic arsenic compounds are generally far less hazardous.

From an actual lab report: AGROLAB's certificate for a Himalayan Shilajit sample states plainly that no maximum level has been defined for total arsenic under the applicable EU food supplement regulation, and explicitly recommends that only inorganic arsenic content is toxicologically relevant and should be separately determined via speciation testing.

This is exactly the distinction most consumer-facing shilajit content skips — a lab report that flags it and recommends the more specific test is demonstrating a higher standard of rigor, not a problem.

It's also worth knowing that arsenic carries meaningfully higher measurement uncertainty than other elements in some methods — AGROLAB's own uncertainty budget lists arsenic at roughly 55%, versus single digits for elements like crude ash — a reminder that a single decimal point on a single report shouldn't be over-interpreted without that context.

5. Fulvic Acid Testing

Fulvic acid results depend heavily on whether a lab reports on a dry-matter or as-received basis, and which method was used (UPLC-UV vs. ISO 19822:2018, for example) — the same underlying material can legitimately produce different-looking numbers.

6. Microbiological Testing

Microbiological screening verifies the absence of pathogens that could pose a food-safety risk. Across the reports referenced here:

The National Institute of Health result is worth noting specifically: it's a Pakistani government reference laboratory and the WHO Focal Point for Food Safety in Pakistan, not a private commercial lab — testing that spans private international labs and a national public-health authority is a meaningfully broader verification base than any single lab alone.

7. Beyond Heavy Metals: The Full Contaminant Screening Scope

A comprehensive testing program goes well beyond the four core heavy metals. AGROLAB's full panel on a Himalayan Shilajit sample included:

Mycotoxins

Aflatoxins B1, B2, G1, and G2 — all below the 1.0 µg/kg quantification limit, sum not quantifiable.

Polycyclic Aromatic Hydrocarbons (PAHs)

Benzo(a)pyrene measured at 2.7 µg/kg against a 10 µg/kg EU limit; total regulated PAH sum at 2.7 µg/kg against a 50 µg/kg limit.

Pesticide Multi-Residue Screening

Over 200 individual active ingredients screened via EN 15662 methodology, with none detected above the limit of quantification.

Pyrrolizidine Alkaloids

A panel of roughly 30 individual plant-derived alkaloid compounds (jacobine, senecionine, lasiocarpine, monocrotaline, and others), each below quantification, with the regulated sum well under the 400 µg/kg EU threshold.

Separately, a Pakistan Council of Scientific & Industrial Research (PCSIR) report tested aflatoxins B1, B2, G1, and G2 specifically via AOAC 972.26:2023 methodology, with none detected against the applicable EU 2023 maximum levels — a second, independently sourced confirmation on the same contaminant class from a different national laboratory.

8. Mineral Testing: Does More Minerals Mean Better Shilajit?

Not by itself. A full elemental scan — the kind ICP-OES is well suited to — can report on dozens of elements at once.

A Pakistani laboratory's ICP-OES analysis of an Immortal Shilajit sample profiled 68 separate elements in one run, including macrominerals like calcium (17,286 µg/g), potassium (21,669 µg/g), and magnesium (16,597 µg/g), alongside dozens of trace elements at much lower concentrations.

A long mineral list is a description of elemental composition, not a quality claim on its own. What determines whether a mineral profile is meaningful is:

• Whether the elements are correctly identified
• Whether contamination-relevant elements are within safety limits
• Whether the material's origin is verified
• Whether the same lab's methodology is transparent about detection limits

These factors matter more than simply how many elements appear on the printout.

9. Facility and Origin Certification: Testing Beyond the Batch

Individual batch COAs answer "was this sample clean." Facility-level certification answers a different question: "is the manufacturing process itself controlled."

21 CFR Part 111 — GMP for Dietary Supplements

This is the FDA's Good Manufacturing Practice framework for dietary supplements, covering personnel, facility conditions, equipment, production and process controls, and quality control.

Himalayan Healing's Abbottabad facility holds a Certificate of Conformity to 21 CFR Part 111 (including related provisions 21 CFR Part 121, Part 117 Subparts A/B/F, and Part 1.511) issued by Eurofins Healthcare Assurance, an ANAB-accredited (ISO/IEC 17065) product certification body, covering ingestible liquid, soft gel, and powder product categories across extraction, primary packaging, quality unit operations, and warehousing.

Certificate of Origin

Separately from safety testing, a Certificate of Origin verifies where raw material actually comes from and that sourcing meets applicable trade regulations — in this case, issued under EU Regulation 2023/1115 on deforestation-free products, confirming Pakistan as the country of origin for the material used.

10. How Consumers Should Read a Shilajit COA

• Named, accredited laboratory (not "an independent lab" with no name)
• Unique report number and analysis date
• Sample identification and batch/lot number
• Stated analytical method (ICP-MS, ICP-OES, UPLC-UV, etc.)
• Clear units, with a stated limit or a limit you can look up (e.g., USP <2232>)
• Heavy metals included — arsenic, lead, cadmium, mercury at minimum
• Microbiology included — E. coli, Salmonella, yeast/mold at minimum
• Traceable to a specific manufacturer and, ideally, a specific batch

11. Common Misunderstandings, Corrected

"Highest fulvic acid always means best?"

No — see the basis-and-method explanation above and in our dedicated fulvic acid article.

"A long mineral list proves authenticity?"

No — an elemental scan describes composition; it doesn't by itself verify origin or safety.

"One lab test proves everything, forever?"

No — a COA is evidence about one batch, tested on one date. A pattern across multiple labs, product lines, and years — as shown above — is what actually demonstrates a controlled, repeatable process.

"Total arsenic detected means the product is unsafe?"

Not necessarily — see the total-vs-inorganic-arsenic distinction above. Presence and concentration relative to a limit is what matters, and labs themselves flag when further speciation is the appropriate next step.

Frequently Asked Questions

What should a good shilajit lab report include?

A named accredited lab, report number and date, sample/batch identification, disclosed analytical method, clear units against a stated limit, heavy metals, and microbiology — with traceability back to a specific manufacturer and batch.

What is ICP-MS testing in shilajit?

Inductively Coupled Plasma Mass Spectrometry — a highly sensitive method for detecting trace-level heavy metals, widely used across food, supplement, and environmental testing.

What heavy metals should be tested in shilajit?

At minimum arsenic, lead, cadmium, and mercury — the four elements regulatory frameworks like USP <2232> center on.

Is high fulvic acid a sign of better shilajit?

Not by itself — the reported basis (dry-matter vs. as-received) and method matter more than the raw number alone.

How long does shilajit last?

Properly packaged resin can maintain its characteristics for several years when stored airtight, away from moisture, at room temperature — exact shelf life should be confirmed against a specific product's own stability data.

What does a Certificate of Analysis mean?

It's evidence about one tested sample, on one date, by one lab — not a permanent guarantee, which is why batch traceability and testing recency both matter.

Sources Referenced

• Eurofins Food Chemistry Testing, Madison WI — Certificates of Analysis 4623052-0, 4860171-0, 5086533-0, 5107930-0
• Eurofins Food Testing UK — Certificate AR-25-UD-152387-01
• Eurofins Healthcare Assurance — Certificate of Conformity ACCB8AAA918_1 (21 CFR Part 111 GMP)
• AGROLAB LUFA GmbH, Kiel, Germany — Test Report, Order 3674612
• Central Analytical Facility Division, Pakistan Institute of Nuclear Science & Technology (PINSTECH) — Reports CAFD-7753-2025 and CAFD-8116-2026
• National Institute of Health, Islamabad — WHO Focal Point for Food Safety, Food Analysis Report FM/368/FAL/234/TDS 190
• Pakistan Council of Scientific & Industrial Research (PCSIR) Laboratories Complex, Lahore — Test Report FBRC/AN/ANAL.REP./422
• International Certification Bureau — Certificate of Origin ICB-UK-CO1226
• USP General Chapter <2232>, Elemental Contaminants in Dietary Supplements