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. One laboratory at a published address. 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. |
| Turnaround | Gold Standard AnalyticsStandard 5–7 business days, guaranteed in writing. 48-hour analytical expedite +$59; 24-hour potency +$80. | Anresco LaboratoriesKratom-specific completion time not published. |
| 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 AnalyticsOperated to ISO/IEC 17025 expectations; 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. |
| Guarantee | Gold Standard AnalyticsMiss the quoted turnaround, or an accredited laboratory materially contradicts our result on a retest of the retained sample, and the panel fee is refunded. | 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 and operates to ISO/IEC 17025 expectations; 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 STE B, 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. Standard turnaround 5–7 business days.