Uzorak

Testing coordinatorZagreb, Croatia

–Not scored

Listed without a score

Testing coordinator: samples are analysed by partner laboratories. The criteria below are still shown for transparency.

Overview

Uzorak.com describes itself as an online platform offering peptide analytical testing services, stating it coordinates order management, logistics, and data processing while sample testing is conducted by a partner laboratory. The site names Stamper Lab d.o.o, located in Zagreb, Croatia, as the laboratory services operator, and Mozart International Limited, registered in Hong Kong, as the platform operator. Advertised services include HPLC-UV purity and mass determination, LC-MS-based impurity identification and molecular identity confirmation, chromogenic LAL endotoxin testing, and an ICP-MS heavy metals screen; amino acid analysis, batch fingerprinting, and sterility testing are listed as "coming soon." The site publishes per-service and per-peptide pricing, stated turnaround times, equipment specifications, and sample report examples. Contact is provided via email and Telegram. Details are summarised from the company's own website and have not been independently audited.

Key facts

Business type	Testing coordinatorTakes orders and sends samples to one or more partner laboratories; it does not perform the analyses itself.
Website	uzorak.com
Public contact	info@uzorak.com · Contact page
Legal entity	Mozart International Limited source
Sample submission / quote	Online order source
Accreditation	Not found in public sources
Pricing	Heavy Metals Screen (18 metals) $190 source Additional vial (same peptide) +$60 source BPC-157 Standard analysis $200 source
Turnaround	Standard analysis 2–3 working days; Advanced LCMS 3–5 working days source
Report verification	Public lookup available source
Sample report	Published source
Partner laboratories	Partner laboratories coordinate the physical testing source Stamper Lab d.o.o, Radnicka 52, Zagreb, Croatia source

Confirmed locations

Testing facility Radnicka 52, Zagreb, Croatia source
Registered / mailing address 17/F Strand 50, 50 Bonham Strand, Hong Kong, Hong Kong source
Registered / mailing address No. 5, 17/F Strand 50, 50 Bonham Strand, Sheung Wan, Hong Kong, Hong Kong source

Testing services

Service	Method (as published)	Source
Purity (HPLC/UPLC)Standard Purity & Mass Analysis (HPLC-UV)	HPLC-UV, 220 nm	source
IdentityMS Identity — Molecular Confirmation	High-resolution mass spectrometry (LC-MS/Q-TOF)	source
Quantity / net contentMass Determination	HPLC peak area calibration against external reference standard	source
EndotoxinEndotoxin Testing (LAL)	Chromogenic LAL assay	source
Heavy metalsHeavy Metals Screen	ICP-MS	source

Evaluation criteria

PAL Testing Evidence Score v1. How it works. – means not found in public sources as of 2026-09-30; it is not a finding that the facility lacks it.

Facility transparency

✓
Street address publishedDocumented. A street address (not a PO box, registered agent or mailing address) is published on the company's own site.
✓
Address identified as the testing facility or sample intakeDocumented. The site ties an address to the laboratory or to where samples are received.
✓
Legal entity namedDocumented. The operating company's legal name is published.
✓
Named scientific staffDocumented. At least one scientist or lab lead is named.

Analytical scope

✓
Purity testing (HPLC/UPLC)Documented. Chromatographic purity testing is offered.
✓
Identity testing (method named)Documented. Identity confirmation is offered and the method is named (e.g. LC-MS, MALDI-TOF). Mass spectrometry counts.
✓
Quantity / net contentDocumented. Quantitation of the amount in the vial is offered.
✓
EndotoxinDocumented. Bacterial endotoxin testing is offered.
–
Culture-based sterility (e.g. USP <71>)Not found in public sources. Compendial or culture-based sterility testing. PCR or rapid screens are listed but do not earn this point.
✓
Heavy metals / elementalDocumented. Heavy-metal or elemental analysis is offered.

Quality & reporting

✓
Method detail documentedDocumented. The site documents how analyses are run (instrument, column, detector, reference standards or validation), not just a technique name.
–
Accreditation stated with accreditor or certificate numberNot found in public sources. An accreditation such as ISO/IEC 17025 is stated with the accrediting body or certificate number. 'Pending', 'aligned' or 'compliant' statements do not count.
–
Accreditation found in the accreditor's public directoryNot found in public sources. PAL found the accreditation in the accrediting body's public directory, or a verified owner submitted it and PAL confirmed it there.
✓
Public report verification lookupDocumented. Anyone can check a report's authenticity by ID or QR code.
✓
Sample report publishedDocumented. An example report or COA can be viewed.

Ordering transparency

✓
Concrete pricing publishedDocumented. At least one concrete price is published.
✓
Turnaround time publishedDocumented. A concrete turnaround time is published.
✓
Online ordering, submission or quote linkDocumented. An online order, sample submission form or quote request is available.

Is this your facility?

Claiming is free. PAL first verifies that you are authorized to act for the business. Verified owners can then use three separate routes. Peptide Ad Lab never charges a business to correct a factual inaccuracy.

Company-provided updatesYour description, testing services, methods and instruments, facility locations, sample submission link, turnaround, pricing and contact details, shown in a section labelled “Provided by the company”. Not checked by PAL and not used in the score. Free: sent to PAL as correction requests. PAL Pro: published directly.
PAL-reviewed evidenceDocuments or links for a scoring criterion. PAL reviews them under the same rule used for every facility; only accepted evidence changes a finding. Any plan.
PAL-verified lab credentialsAccreditations such as ISO/IEC 17025. They count only after PAL finds them in the accreditor’s public directory. Any plan.

PAL Pro is an optional paid plan for company-provided updates, extra images and the PAL Pro badge. It never verifies a credential, accepts evidence, or changes a finding, score, eligibility or ranking position.

Ownership verification confirms that you control the business. It is separate from laboratory credentials and from PAL Pro, it is not an endorsement, and it does not change any finding or score.

Claim This Profile

Sources

Last reviewed 2026-09-30. All facts above were taken from these pages on the company’s website.

Peptide Ad Lab has not tested samples at or audited this facility. Information is summarised from public sources and may change. Businesses can claim this profile to request corrections.