Murray-Brown Laboratories vs Gold Standard Analytics
Murray-Brown Laboratories in Northglenn, Colorado is the most transparent kratom lab in the published market: a $300 combined alkaloid, metals and microbial package, seven named alkaloids by HPLC-UV within a PJLA ISO/IEC 17025 scope valid to August 2028, and volume rates of $95 potency and $80 metals for eleven or more samples. For a vendor submitting single lots who wants a lower published price, a public certificate and raw data on request, Gold Standard Analytics offers a different trade.
Murray-Brown Laboratories, Northglenn, Colorado. mb-labs.com/kratom/. Facts checked September 9, 2026.
Murray-Brown LaboratoriesWhat Murray-Brown does well
- Seven named kratom alkaloids explicitly listed in the PJLA scope (72716 / L26-517), valid to August 31, 2028.
- Published $300 combined package covering alkaloids, metals and microbes at 5 business days.
- Low-level 7-OH and pseudoindoxyl options on the menu.
- Volume pricing of $95 potency and $80 metals for 11+ samples submitted together.
Side by side
| Gold Standard Analytics | Murray-Brown 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. | Murray-Brown LaboratoriesNorthglenn, Colorado. Shipping at your cost; published sample requirement 60 g, or 3 g for extracts. |
| 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. | Murray-Brown LaboratoriesKratom leaf and extracts; low-level 7-OH and pseudoindoxyl as options. |
| 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. | Murray-Brown LaboratoriesSeven alkaloids by HPLC-UV: mitragynine, 7-OH, isorhynchophylline, mitraphylline, paynantheine, speciociliatine and speciogynine. $300 in the combined package; $95 potency at 11+ samples. |
| 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. | Murray-Brown LaboratoriesLow-level 7-OH and pseudoindoxyl offered as optional add-ons; price not published. |
| 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. | Murray-Brown LaboratoriesMetals in the $300 package; $80 at volume. Element list per menu. |
| Microbiology | Gold Standard AnalyticsBasic microbiology $89 (TAMC, TYMC, E. coli, Salmonella), expanded $179 adds S. aureus and coliforms; culture and enumeration with confirmatory PCR. | Murray-Brown LaboratoriesMicrobial package included in the $300 package. |
| 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. | Murray-Brown LaboratoriesNot on the published kratom menu. |
| Turnaround | Gold Standard AnalyticsStandard 5–7 business days, guaranteed in writing. 48-hour analytical expedite +$59; 24-hour potency +$80. | Murray-Brown Laboratories5 business days advertised. |
| 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. | Murray-Brown LaboratoriesCOAs delivered to the client. Submission terms state raw chromatograms are not provided. |
| 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. | Murray-Brown LaboratoriesSubmission form and terms; 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. | Murray-Brown LaboratoriesSubmission form and mailed samples; account and volume terms by contact. |
| Payment | Gold Standard AnalyticsCard, Apple Pay, Google Pay, Klarna, ACH, wire, Mercury invoice with net terms, and any cryptocurrency. | Murray-Brown 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. | Murray-Brown LaboratoriesPJLA ISO/IEC 17025 (72716 / L26-517), expires Aug 31, 2028; seven kratom alkaloids explicitly in scope. |
| 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. | Murray-Brown LaboratoriesNone published. |
Sources: mb-labs.com, checked Sep 8 2026.
Published prices
| Test | Gold Standard Analytics | Murray-Brown Laboratories |
|---|---|---|
| Kratom alkaloid panel, 5 alkaloids | Gold Standard AnalyticsView current pricing | Murray-Brown Laboratories$300 |
| Low-level 7-OH by LC-MS/MS | Gold Standard AnalyticsView current pricing | Murray-Brown Laboratories$0 |
| Heavy metals, ICP-MS | Gold Standard Analytics+$169 | Murray-Brown Laboratories$300 |
| Microbiology panel | Gold Standard AnalyticsView current pricing | Murray-Brown Laboratories$300 |
| Pesticide screen | Gold Standard AnalyticsView current pricing | Murray-Brown Laboratories$0 |
| Full kratom quality package | Gold Standard AnalyticsView current pricing | Murray-Brown Laboratories$300 |
Murray-Brown’s $300 is one combined alkaloid, metals and microbial package, shown against each row it covers; its $95/$80 volume rates require 11+ samples together. Gold Standard prices are per single sample. A dash means no public price.
Questions about Murray-Brown Laboratories and Gold Standard Analytics
Is Gold Standard Analytics a Murray-Brown alternative for kratom testing?
For single-lot kratom vendors, yes: a $199 seven-alkaloid profile, low-level 7-OH on the same accession, raw chromatograms on request and a public certificate library. If you need an accredited scope naming seven alkaloids or submit eleven or more samples at a time, Murray-Brown’s volume rates are competitive and it holds the accreditation.
How much does Murray-Brown charge for kratom testing?
Murray-Brown advertises a $300 combined package covering alkaloids, metals and microbes at 5 business days, with $95 potency and $80 metals for 11 or more samples submitted together. Gold Standard charges $199 for the seven-alkaloid profile, $149 for metals and $89 for microbiology, per single sample.
Is Murray-Brown ISO 17025 accredited for kratom?
Yes. Its PJLA certificate (72716 / L26-517) expires August 31, 2028 and explicitly lists seven kratom alkaloids by HPLC; add-ons beyond that list should be checked against the 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 Murray-Brown test?
Mitragynine, 7-hydroxymitragynine, isorhynchophylline, mitraphylline, paynantheine, speciociliatine and speciogynine by HPLC-UV, with low-level 7-OH and pseudoindoxyl as options. 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 Murray-Brown kratom COA?
Murray-Brown delivers COAs to the client and its terms state raw chromatograms are not provided; there is no public library to check a vendor-posted PDF against. Every Gold Standard certificate, including failures, verifies here by accession number and is exported to a public library anyone can download.
Where is Murray-Brown located?
Northglenn, Colorado. 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.