MZ Biolabs, LLC

Researched September 26, 2026

Website: mzbiolabs.com/
Location: Tucson, Arizona, USA
Founded: 2019 (source: crunchbase.com/organization/mz-biolabs; also biopharmguy.com/company.php/MZ%20Biolabs — not stated verbatim on the lab's own About page text returned by search)
Accreditation: none found
Source: chemverify.com/learn/third-party-peptide-testing-labs-2026
Verify a report: No public COA/report lookup tool on MZ Biolabs' own site; sample COAs carry no QR code or certificate key. Verification described as informal — contact the lab directly by email with the report number and issue date.
What it tests: Identity (mass spec): QTOF (quadrupole time-of-flight) mass spectrometry combined with HPLC-UV used to confirm compound identity (source: mzbiolabs.com/mzbiolabs/coa-testing/, peptigrity.com/testing-labs/mz-biolabs)
Purity (HPLC): HPLC with UV detection for purity confirmation (source: mzbiolabs.com/mzbiolabs/coa-testing/)
Quantity / content: HPLC-based quantitation is part of standard COA testing; a separate capsule/product identification-and-quantification panel reported starting around $350 (source: goldstandardanalytics.com/compare/mz-biolabs)
Endotoxin: Bacterial endotoxin (LPS) testing via USP <85>, reportedly added around December 2024, ~$175 per two replicates (source: goldstandardanalytics.com/compare/mz-biolabs)
Sterility: Sterility testing via USP <71>, reportedly added in early 2025 (source: goldstandardanalytics.com/compare/mz-biolabs)
Heavy metals: Not offered — multiple sources describe MZ Biolabs' core purity testing as chemistry-only, not covering heavy metals or pH (source: goldstandardanalytics.com/compare/mz-biolabs)
Published pricing: No price published on the lab's own site for standard identity/purity testing; a third-party comparison site reports ~$200-300 for comprehensive panels, endotoxin at $175 (USP <85>, two replicates), and capsule ID/quantification from $350 (source: goldstandardanalytics.com/compare/mz-biolabs — a competitor's comparison page, not MZ Biolabs' own pricing page)
Turnaround: Reported as approximately 2 weeks, variable by circumstance (source: goldstandardanalytics.com/compare/mz-biolabs)

Track record

publishedIn community-documented testing around early 2025, MZ Biolabs correctly identified peptide samples that had been mislabeled (Cagrilintide submitted as Semaglutide; Tirzepatide submitted as Retatrutide), catching mislabeling that another major peptide-testing lab had initially missed.
chemverify.com/learn/third-party-peptide-testing-labs-2026
community claimMESO-Rx forum members discussed MZ Biolabs' domestic testing service — noting some panels are relatively expensive with accuracy questions raised, and that the lab requires a DEA license from parties sending/receiving samples and states it may share submitter information with the DEA.
thinksteroids.com/community/threads/domestic-testing-service

Published disputes & incidents

None found in published sources.

Notes

Name is unambiguous — a distinctive Tucson, AZ lab consistently identified as the peptide/SARM/research-chemical testing lab across every source found; no collision risk. WebFetch was blocked in this session by a local tool-use hook, so findings rely on WebSearch's synthesized excerpts rather than direct fetches of mzbiolabs.com; pricing/turnaround/some test-menu details are sourced to a competitor's comparison page (Gold Standard Analytics) rather than the lab's own pricing page, which could not be directly accessed.

Vendors citing MZ Biolabs, LLC (10)

Hydro Research Peptides Sports Technology Labs Livewell Peptides Spartan Peptides Aminovault Evolve Peptides Pure Tested Peptides Peptuvia Novaglo Research Peptide Technologies