Peptidetesting

All labs

MZ Biolabs

Public information only

A verified Tucson analytical lab that names its instruments and tests research compounds. Currently flagged because its advertised certificate-verification page returns a 404 error.

Watch - from four separately substantiated review fields. See them

Watch profile: widely used, but with unresolved signals below. Popularity is not verification - read the signals and their sources. Think this rating is too strict? Perhaps. But a lab should mind the details - when it does not, that too is a signal.
Legal entity
MZ BIOLABS, LLC
Registration
23028906 · 2019-10-14 (Arizona Corporation Commission)
Location
Tucson, United States Americas · 13700 N SEIFERT ESTATES DR, TUCSON, AZ, 85755
Website
mzbiolabs.com
Indicative price
On request
Order acceptance
Private orders on request

Four separate review fields

Existing overall assessment: Watch

The overall assessment is not an average of these four fields. Each field answers a different question and cannot offset another.

Substantiated

Who is behind the laboratory?

A responsible legal entity and its leadership or operator are publicly substantiated.

Boundary: Identity and responsibility do not establish analytical competence.

View 6 signals and their evidence
Signal profile - Counts show composition, not a score. Core evidence 2 Supporting evidence 2 Boundary 2 Contradiction 0
  • Positive MZ BIOLABS, LLC is registered as a Domestic LLC with the Arizona Corporation Commission, Entity ID 23028906, formed October 14, 2019, status Active.
  • Positive At least one named key person is independently attributed to this laboratory: Ken Pendarvis.
  • Positive The registered address 13700 N SEIFERT ESTATES DR, TUCSON, AZ, 85755 is confirmed by Arizona Corporation Commission.
  • Positive Ken Pendarvis and Jaishree Mali list relevant qualifications (Chemical Engineer, Ph.D. in Pharmaceutical Chemistry) on the company website.
  • Neutral OpenCorporates lists 13700 N Seifert Estates Dr, Tucson, AZ 85755, while business directories NeverBounce and ZoomInfo list 1635 E 18th St, Tucson, AZ 85719. The Arizona Corporation Commission excerpt does not display an address, so it cannot be determined which is current.
  • Neutral Nina Ossanna is named by the laboratory, but an independent source attributes that person elsewhere or denies the association.
Partially substantiated

Is the procedure technically substantiated for peptides?

Specific method or process evidence exists, but the full method-by-matrix contract is not public.

Boundary: Lack of accreditation is normal here and is not a negative signal.

View 3 signals and their evidence
Signal profile - Counts show composition, not a score. Core evidence 0 Supporting evidence 1 Boundary 2 Contradiction 0
  • Positive The laboratory names concrete instrumentation: QTOF mass spectrometer, Waters Acquity UPLC.
  • Neutral No verifiable accreditation. For a laboratory that accepts private samples this is the norm, not a mark against it.
  • Neutral DEA Schedule III License is claimed, but no entry in the accreditation body's own register could be cited; the claim can neither be verified nor refuted.
Verification route contradicted

Can a report be traced back through the issuer?

An advertised route or the issuer assignment conflicts with the substantiated check.

Boundary: Report confirmation establishes neither analytical competence nor the contents of an individual vial.

View 1 signal and its evidence
Signal profile - Counts show composition, not a score. Core evidence 0 Supporting evidence 0 Boundary 0 Contradiction 1
Method
advertised_broken
Verification path
https://mzbiolabs.com/mzbiolabs/coa-testing
  • Watch The laboratory advertises certificate verification, but the advertised page does not exist (HTTP 404 when fetched).
Not publicly established

Has actual measurement performance been checked externally?

No suitable independent evidence of actual measurement performance was publicly established.

Boundary: Testimonials, report volume and average purity values are not external performance evidence.

No public signals in this review field.

Our honest take

Reports from MZ Biolabs show a mix of strong existence signals and one concrete open concern that prevents an unqualified trust statement.

Positive Signals

On the positive side, MZ BIOLABS, LLC is a verified Domestic LLC registered with the Arizona Corporation Commission (Entity ID 23028906, formed October 14, 2019, status Active) at a confirmed physical address in Tucson, Arizona. The domain mzbiolabs.com has been registered since September 25, 2019, via Cloudflare, Inc. At least one named key person, Ken Pendarvis, is independently attributed to this laboratory; the company website also names Jaishree Mali and Nina Ossanna with stated relevant qualifications.

::

Instrumentation and Services

The laboratory discloses concrete instrumentation - a QTOF mass spectrometer and a Waters Acquity UPLC - and its COA Testing page explicitly states it frequently analyzes peptides, purity of raw powders and liquids, and other research compounds.

::

Accreditation and Licensing

The laboratory is not ISO/IEC 17025 accredited; for a laboratory that accepts private samples, this is the norm and not a mark against it. A claimed DEA Schedule III License could not be verified in an accreditation body's own register and can neither be confirmed nor refuted.

::

Open Concern

The public evidence does not converge to the highest rating primarily because of one red-weight signal: the laboratory advertises a certificate-verification page, but the page returns HTTP 404 when fetched - a concrete, checkable discrepancy between a claimed verification service and its actual availability.

::

Neutral Observations

Additional neutral observations include an address inconsistency between OpenCorporates and business directories, a very thin community-reputation footprint with only three low-engagement Reddit threads and no detailed firsthand comparisons, a person-entity mismatch regarding Nina Ossanna, and a B2B-only ordering orientation with no public pricing. These are signals, not a verdict.

::

Below: the material this assessment is built on.

People behind the lab

Ken Pendarvis
Analytical Chemist / Owner
Jaishree Mali
Analytical Chemist
Nina Ossanna
Co-Founder

Accreditation

ISO/IEC 17025: Not accredited Multiple independent sources (Peptigrity, Peptide Protocol Wiki, The Peptide List, Reddit) confirm MZ Biolabs is not ISO/IEC 17025 accredited. MZ Biolabs' own website does not claim this accreditation. No direct accreditation-body register query was performed in the supplied sources, but secondary sources are consistent.

DEA Schedule III License: Claimed, unverified MZ Biolabs claims 'US DEA Schedule III licensed facility' on its website. This is a controlled-substance handling license, NOT an analytical competence or quality-system accreditation. It does not equate to ISO/IEC 17025.

What is tested - and with what

Methods & capabilities LC-MS · identityHPLC (UPLC) · purityUV-based purity testing · purity

Context without a quality rating

These signals describe access, the public trail and documents. They do not colour any of the four review fields.

Audit complete

Access and offering · 3
  • Positive COA Testing page explicitly states 'We frequently analyze peptides, SARMS, nootropics, vitamins, and other research compounds' and 'purity of raw powders and liquids'.
  • Neutral The laboratory's public ordering route addresses business customers only; no private ordering route was found.
  • Neutral No prices on the website; contact form for inquiries
Public and digital trail · 3
  • Positive The domain mzbiolabs.com has been registered since September 25, 2019, via Cloudflare, Inc., indicating an established online presence of approximately six years.
  • Positive Entity formed on October 14, 2019, over 5 years ago.
  • Neutral Only three Reddit threads mention MZ Biolabs, all with very low engagement and no detailed firsthand testing comparisons. The available record is described as too thin to establish a strong community reputation, a proven track record, or a pattern of fake or unreliable reports.
Domain & digital trail
Domain registered
2019-09-25 (6.8 age)
Registrar
Cloudflare, Inc.
TLS
Google Trust Services

Sources

Show all 87 sources

For lab operators

Run this lab? You can confirm the entry and correct it.

Claim this lab
This profile is built from public sources and reviewed by hand. It shows where each fact comes from. A listing is a set of signals, not an endorsement or a verdict - and never a guarantee. Presence and order cannot be purchased.