Anresco Laboratories vs Gold Standard Analytics for kratom testing
Anresco Laboratories in San Francisco publishes two kratom menus that should stay separate: a six-target HPLC-DAD panel (mitragynine, paynantheine, speciogynine, speciociliatine, 7-OH and MGM-15) and a nine-target LC-MS/MS panel that adds ajmalicine, corynantheidine, corynoxine and mitraphylline but drops MGM-15. Its ANAB scope (AT-1551 v016, valid to June 2027) carries a herbal-alkaloid LC-DAD row. Pricing is by quote. For a published price and a public certificate, Gold Standard Analytics is the alternative.
Anresco Laboratories, San Francisco, California. anresco.com/services/kratom-rd/. Facts checked September 9, 2026.
What Anresco does well
- Two documented kratom panels: six targets by HPLC-DAD and nine by LC-MS/MS, with plant matter, extracts and infused products explicitly discussed.
- ANAB ISO/IEC 17025 AT-1551 v016, expires June 29, 2027, with a herbal-alkaloid LC-DAD row.
- Metals by ICP-MS, microbes and pesticide options from a long-established food lab.
- Emailed and portal-downloadable reports.
Side by side
| Gold Standard Analytics | Anresco Laboratories | |
|---|---|---|
| Location and shipping | Gold Standard AnalyticsHouston, Texas, at a published address; approved partner labs are named on the certificate. Kratom leaf, powder, extracts, capsules, gummies and shots ship from any state on the prepaid UPS label we issue. | Anresco LaboratoriesSan Francisco, California headquarters and receiving; confirm the executing site per assay. Shipping at your cost. |
| Sample and program fit | Gold Standard AnalyticsKratom leaf, powder, extracts, capsules, gummies and shots for quality control and label claims. Concentrated 7-OH and derivative products are accepted case by case after we confirm the matrix; we hold no DEA registration. | Anresco LaboratoriesKratom plant matter, extracts and infused products explicitly discussed. |
| Alkaloid potency | Gold Standard AnalyticsKratom seven-alkaloid profile $199 per sample: mitragynine, 7-hydroxymitragynine, speciogynine, speciociliatine and paynantheine by UHPLC-UV on the Agilent 1290 Infinity II, with LC-MS/MS confirmation of identity on the 6490 triple quadrupole. | Anresco LaboratoriesSix targets by HPLC-DAD including 7-OH and MGM-15, or nine by LC-MS/MS. Quote. |
| Low-level 7-OH and derivatives | Gold Standard AnalyticsLow-level 7-hydroxymitragynine by LC-MS/MS is run on the same accession when the UV result is below the reporting limit; the certificate states the method and the limit used, on an as-received basis. | Anresco Laboratories7-OH is within both panels; the LC-MS/MS panel is the trace option. Quote. |
| Heavy metals | Gold Standard AnalyticsFour-metal panel (As, Cd, Pb, Hg) $149 by ICP-MS on the Agilent 7850 after closed-vessel digestion; nickel and chromium on request. | Anresco LaboratoriesMetals by ICP-MS; no public price. |
| Microbiology | Gold Standard AnalyticsBasic microbiology $89 (TAMC, TYMC, E. coli, Salmonella), expanded $179 adds S. aureus and coliforms; culture and enumeration with confirmatory PCR. | Anresco LaboratoriesMicrobes offered; no public price. |
| Pesticides and solvents | Gold Standard AnalyticsPesticide screen from $269 by LC-MS/MS and GC-MS/MS; residual solvents $99 for 24 targets by headspace GC-MS for extracts. | Anresco LaboratoriesPesticide options; no public price. |
| Public results and raw data | Gold Standard AnalyticsEvery certificate public and searchable by accession, including failures and retractions; a client cannot remove one. Free JSON, CSV and Atom exports of the whole library. A signed NDA is the one exception and is stated on the record. | Anresco LaboratoriesEmailed and portal-downloadable reports to the client; no public library. |
| Chain of custody | Gold Standard AnalyticsEvery package opened on camera, each container photographed and blind-coded before it reaches the bench; footage and photos retained three years and tied to the accession. Raw chromatograms available on request. | Anresco LaboratoriesSample submission guidance; no on-camera receiving or footage retention is published. |
| Ordering | Gold Standard AnalyticsSelf-service online intake with a live quote and an instant prepaid label; no account manager or quote form. API, MCP, Telegram and WhatsApp ordering. | Anresco LaboratoriesQuote request; portal reporting. |
| Payment | Gold Standard AnalyticsCard, Apple Pay, Google Pay, Klarna, ACH, wire, Mercury invoice with net terms, and any cryptocurrency. | Anresco LaboratoriesNot published; invoiced to the client account. |
| ISO/IEC 17025 and scope | Gold Standard AnalyticsProcedures modelled on ISO/IEC 17025; not accredited, and we say so on every page. | Anresco LaboratoriesANAB ISO/IEC 17025 AT-1551 v016, expires Jun 29, 2027; herbal alkaloids by LC-DAD in scope, nine-target LC-MS/MS scope not independently established. |
| Refunds | Gold Standard AnalyticsSee the refund policy for the remedies that apply to your order. A confirmed error of ours is corrected publicly, and credited or refunded if it can’t be fixed. | Anresco LaboratoriesNone published. |
Sources: anresco.com, checked Sep 8 2026.
Published prices
| Test | Gold Standard Analytics | Anresco Laboratories |
|---|---|---|
| Kratom alkaloid panel, 5 alkaloids | Gold Standard AnalyticsView current pricing | Anresco Laboratories$0 |
| Low-level 7-OH by LC-MS/MS | Gold Standard AnalyticsView current pricing | Anresco Laboratories$0 |
| Heavy metals, ICP-MS | Gold Standard Analytics+$169 | Anresco Laboratories$0 |
| Microbiology panel | Gold Standard AnalyticsView current pricing | Anresco Laboratories$0 |
| Pesticide screen | Gold Standard AnalyticsView current pricing | Anresco Laboratories$0 |
| Full kratom quality package | Gold Standard AnalyticsView current pricing | Anresco Laboratories$0 |
Anresco publishes no numeric kratom prices; testing is quoted. Gold Standard prices are the published catalog. A dash means no public price.
Questions about Anresco Laboratories and Gold Standard Analytics
Is Gold Standard Analytics a Anresco alternative for kratom testing?
Yes for a published-price alkaloid panel with low-level 7-OH on one accession, online ordering and public certificates. If you need ajmalicine, corynantheidine, corynoxine or MGM-15 reported, Anresco names them and Gold Standard does not currently report them.
How much does Anresco charge for kratom testing?
Anresco quotes kratom testing; no numeric price is published. Gold Standard charges $199 for the seven-alkaloid profile, $149 for metals and $89 for microbiology.
Is Anresco ISO 17025 accredited for kratom?
Yes at San Francisco: ANAB AT-1551 v016, expiring June 29, 2027, with a herbal-alkaloids LC-DAD row; we could not independently establish that the nine-target LC-MS/MS panel is within scope. Gold Standard is not accredited; we state that plainly rather than imply otherwise.
Which kratom alkaloids does Anresco test?
By HPLC-DAD: mitragynine, paynantheine, speciogynine, speciociliatine, 7-OH and MGM-15. By LC-MS/MS: mitragynine, 7-OH, ajmalicine, corynantheidine, corynoxine, mitraphylline, paynantheine, speciociliatine and speciogynine. Gold Standard reports mitragynine, 7-hydroxymitragynine, speciogynine, speciociliatine and paynantheine, with low-level 7-OH by LC-MS/MS on the same accession.
Can I verify a Anresco kratom COA?
Anresco emails reports and posts them to the client portal; there is no public library to check a vendor-posted certificate against. Every Gold Standard certificate, including failures, verifies here by accession number and is exported to a public library anyone can download.
Where is Anresco located?
San Francisco, California. Gold Standard is at 5151 Mitchelldale St A10, Houston, TX 77092, and accepts kratom samples nationwide on a prepaid label.
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Submit a sample
Prepaid domestic label, public certificate, chain-of-custody video.