Lab documentation · checked 8 October 2026

TL;DR: Of eight Indian shilajit resin brands checked on 8 October 2026, two publish a certificate on their own site — Upakarma, with a report per batch for 12 products, and The Yeti Life, for batch B023724DC25. Six state a fulvic acid percentage but publish no document. A stated percentage is a claim; a certificate naming a laboratory, a batch and a report number is a measurement.

8brands checked
2publish a certificate
76.12%our measured fulvic acid
Certificates of analysis for Yeti Life shilajit batches
What a batch certificate looks like when a brand publishes one

What each brand publishes

Each row records only what was visible on that brand's own website on 8 October 2026. “None found” means we could not find the document from the product page and the obvious lab-report URLs, not that the brand does not test. If a brand publishes something we missed, write to care@theyetilife.com and this page will be corrected and re-dated.

Brand Certificate published Batch number shown Laboratory named Fulvic acid on the page Heavy metals
The Yeti Life Yes — PDF Yes, B023724DC25 Eurofins (report AR-258-2025-20112882-01) 76.12%, measured Each metal reported as Pass against the Ayurvedic Pharmacopoeia specification
Upakarma Yes — 12 products, one PDF each Yes, per product (20 g: 1MAI2501) Not named on the listing page Not on the listing page Not on the listing page; the PDFs are scans we did not transcribe
Rasayanam None found No Eurofins named in page text 75%, stated None found
Kapiva None found No “NABL” in page text 60%+, stated None found
Dabur None found No None named >80%, stated None found
Nutrabay None found No None named 80%, stated None found
Zandu None found No None named 70%, stated None found
Heritage Kashmir None found No “NABL” in page text None found None found

How to read this

Six of the eight brands print a fulvic acid figure on the product page: 80% (Dabur and Nutrabay), 75% (Rasayanam), 70% (Zandu), 60%+ (Kapiva). None of those six publishes a document behind the number. That is the distinction this page exists to draw: a figure on a sales page is a claim by the seller, and a figure on a certificate is a measurement by a laboratory that can be named and asked.

Two brands publish documents, in different forms. Upakarma lists a downloadable report for each of twelve products with the batch number beside it — the broadest batch-level publication we found in this set. Its files are scanned images, so we did not transcribe their values and make no claim about what they contain. The Yeti Life publishes one certificate, for the batch currently sold.

For our own product, the certificate for batch B023724DC25 reports fulvic acid at 76.12% and records lead, arsenic, mercury and cadmium each as passing against the Ayurvedic Pharmacopoeia of India specification. It is based on Eurofins report AR-258-2025-20112882-01. It states results as pass or fail rather than as concentrations.

ConsumerLab's published review criteria require at least 5% fulvic acid for a product sold as purified shilajit and 10% for an extract. Every figure stated on these eight pages clears that bar comfortably, which is one reason the stated number is a weak signal on its own.

What this page does not tell you

It does not rank the brands, and it is not a purity comparison. No laboratory has tested these eight products side by side, so nobody — including us — can tell you which is purest. What you can compare is what each brand is willing to show you, which is what the table records.

Frequently asked questions

Which shilajit brands publish a certificate of analysis?

Checked on 8 October 2026, two of the eight Indian brands we track publish a certificate on their own site: Upakarma lists a downloadable report for each of 12 products with the batch number beside it, and The Yeti Life publishes the certificate for batch B023724DC25. For the other six we found no certificate, which is not the same as saying they do not test.

Is a stated fulvic acid percentage the same as a measured one?

No. A figure printed on a product page is a claim by the seller. A figure on a certificate that names the laboratory, the batch and a report number is a measurement someone else made and can be asked about. Six of the eight brands here state a percentage; two publish a document.

What should I ask a brand for before buying?

The certificate for the batch number printed on the jar you will receive, not a sample certificate: the laboratory's name, a report number you could quote back to that laboratory, fulvic acid as a number, and a result for each of lead, arsenic, mercury and cadmium.

Related

What each of these brands charges is a separate question from what each one publishes: our price-per-gram index was re-read on 6 October 2026, and what 20 g costs in India covers the single-jar comparison most people actually make.

Sources

  1. The Yeti Life — page checked, retrieved 8 October 2026
  2. Upakarma — page checked, retrieved 8 October 2026
  3. Rasayanam — page checked, retrieved 8 October 2026
  4. Kapiva — page checked, retrieved 8 October 2026
  5. Dabur — page checked, retrieved 8 October 2026
  6. Nutrabay — page checked, retrieved 8 October 2026
  7. Zandu — page checked, retrieved 8 October 2026
  8. Heritage Kashmir — page checked, retrieved 8 October 2026
  9. The Yeti Life — certificate of analysis, batch B023724DC25 (PDF)
  10. The Yeti Life — shilajit price-per-gram index, re-read 6 October 2026