Purity & Batch Information

Lab reports &
certificates of analysis

Our independent laboratory reports are published below in full. Purity is stated on every product we stock, and batch details are available on request - contact support with your product name at any point before or after ordering.

Retatrutide & GHK-Cu Tested — 99% Batch Details on Request Stored Frozen UK Stocked
Note

How documentation works: Where we hold an independent laboratory report, it is published on this page in full - we do not summarise results and withhold the document. For everything else, batch details, purity documentation and supporting paperwork from our suppliers are provided by email on request, typically within one business day.

What Is Available

Documentation we can provide

Contact orders@northpeptidesuk.com with your product name. We will provide whatever documentation we hold from our suppliers for the current batch.

01
Batch Details

Batch reference information from our suppliers is available on request. Email support with the product name and we will provide what we hold.

02
Purity Documentation

Purity is stated on every product. Where supplier documentation supports the stated purity figure, we can share this on request. Availability varies by product.

03
Storage Information

All products are stored frozen from arrival until dispatch. Standard storage conditions and shelf-life information for each compound is available on request.

04
Product Specification

Form, weight, grade and specification details for each product are available. These match what is stated on the product pages and can be confirmed in writing on request.

Published Independent Reports

Two independent reports. Both 99% by HPLC.

We sent samples from our own UK stock to an independent analytical laboratory in Poland and paid for HPLC analysis. Every report we hold is published here in full and unedited - including the vial photographs the laboratory took.

Retatrutide certificate of analysis from Analiza Bialek showing 99% purity
Independently Tested

Retatrutide

Analiza Białek sp. z o.o. · Wrocław, Poland · Report 100016392

99%Purity (HPLC)
16.49mgMeasured Content
15mgLabel Claim
Jul 2026Analysed

A sealed 15mg retail vial from our UK stock was analysed by reverse-phase HPLC on a BioBasic 8 column against a water/acetonitrile gradient. Purity came back at 99%, with vial content measured at 16.49mg against a 15mg label claim - over the stated weight, not under. All Retatrutide vial sizes are filled from the same material.

Open full-size report ->
GHK-Cu certificate of analysis from Analiza Bialek showing 99% purity
Independently Tested

GHK-Cu 50mg

Analiza Białek sp. z o.o. · Wrocław, Poland · Report 100016393

99%Purity (HPLC)
54.75mgMeasured Content
50mgLabel Claim
Jul 2026Analysed

A sealed retail vial from our UK stock was analysed by reverse-phase HPLC on a BioBasic 8 column against a water/acetonitrile gradient. Purity came back at 99%, with vial content measured at 54.75mg against a 50mg label claim. The report also covers the GHK-Cu component of the KLOW Stack.

Open full-size report ->
99%Reta & GHK-Cu, HPLC Verified
·
BatchDetails on Request
·
FrozenUntil Dispatch
·
UKStocked & Dispatched

Current Stock - Documentation Status

Product documentation overview

For any product below, email orders@northpeptidesuk.com with the product name. We will reply with whatever documentation we hold for the current batch, typically within one business day.

Retatrutide
Triple GLP-1/GIP/Glucagon Agonist
In Stock
Purity99% - independently verified (HPLC)
Content16.49mg vs 15mg claim
FormLyophilised Powder
StorageFrozen Until Dispatch
Lab ReportPublished in Full
Report Published
Open Report →
Tirzepatide
Dual GIP & GLP-1 Agonist
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →
BPC-157
Synthetic Pentadecapeptide
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →
TB-500
Thymosin Beta-4 Fragment
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →
GHK-Cu
Copper Peptide Complex
In Stock
Purity99% - independently verified (HPLC)
Content54.75mg vs 50mg claim
FormLyophilised Powder
StorageFrozen Until Dispatch
Lab ReportPublished in Full
Report Published
Open Report →
KPV
Alpha-MSH Fragment Tripeptide
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →
KLOW Stack
4-Compound Blend (GHK-Cu, TB-500, BPC-157, KPV)
In Stock
GHK-Cu Part99% - independently verified (HPLC)
Other PartsSupplier stated
FormLyophilised Blend
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
GHK-Cu Report Published
Open Report →
Ipamorelin
Selective GH Secretagogue
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →
CJC-1295 (No DAC)
Modified GRF 1-29
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →
NAD+
Pyridine Dinucleotide Coenzyme
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →
SS-31
Mitochondria-Targeted Tetrapeptide
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →
Semax
Nootropic Heptapeptide (ACTH 4-7)
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →
Selank
Tuftsin Analogue Heptapeptide
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →
Epitalon
Pineal Tetrapeptide (AEDG)
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →
Pinealon
Regulatory Tripeptide (EDR)
In Stock
PuritySupplier stated
FormLyophilised Powder
StorageFrozen Until Dispatch
Batch DetailsAvailable on Request
Docs Available by Email
Request Docs →

Get Documentation

Need batch details or
purity documentation?

Email support with your product name. We will share whatever documentation we hold from our suppliers for the current batch - typically within one business day.

Request documentation → Telegram WhatsApp

Simple Process

How to get documentation

01

Email Support

Send an email to orders@northpeptidesuk.com stating which product you need documentation for. No account required.

02

We Check Stock

We check what documentation we hold from our suppliers for the current batch of that product.

03

Docs Sent

We reply with whatever is available - batch details, purity information, or supplier documentation. Typically within one business day.

04

Place your order

Review the documentation, ask any questions, then order when ready. Support is available throughout.

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