Question 1

What does reference-grade mean?

Accepted Answer

Reference-grade describes material characterized to a documented analytical standard suitable for laboratory research. It is not a pharmaceutical or therapeutic grade — it denotes that identity and purity have been measured and recorded, not that the compound is approved for any use in humans or animals.

Question 2

How is purity shown?

Accepted Answer

Where a reviewed public report includes purity, the Lab Results library reproduces that measured value for the report's tested sample. A report for one sample strength is not presented as a blanket purity claim for every catalog size or future lot.

Question 3

What assays are shown?

Accepted Answer

The public library displays only the analyses and result fields present in each reviewed third-party report. It does not infer LC-MS identity, endotoxin, sterility, water content, or other assays when the source report does not provide them.

Question 4

What's the difference between HPLC purity and LC-MS identity?

Accepted Answer

HPLC purity quantifies how much of the sample is the target compound versus impurities, by separation and peak area. LC-MS identity confirms that the measured molecular mass matches the expected sequence. The two are complementary: one measures how pure, the other confirms what it is.

Question 5

How should peptides be stored?

Accepted Answer

Lyophilized peptide is stable at −20 °C, desiccated and protected from light. Once reconstituted, refrigerate at 2–8 °C and use within the window defined by your protocol, avoiding repeated freeze–thaw cycles. This is laboratory-handling reference only.

Question 6

Does a published report prove every lot?

Accepted Answer

No. A public report documents the tested sample identified by its task number, analysis date, strength, and measured results. Related catalog numbers are shown without implying that every lot or size was tested.

Question 7

What's on a public COA?

Accepted Answer

Each PDF identifies the tested product sample, related catalog numbers, third-party laboratory, task number, analysis date, and measured results.

Question 8

Who prepared it?

Accepted Answer

CRX prepares each public summary from third-party results. The currently published summaries identify Janoshik in the Czech Republic as the testing laboratory.

Question 9

Can I view the PDF?

Accepted Answer

Yes. Every record in the Lab Results library links directly to its PDF.

Question 10

What is not included?

Accepted Answer

The library excludes unpublished reports and unsupported catalog products. It also keeps public-reference molecular data separate from measured tested-sample results.

Question 11

Who can order?

Accepted Answer

Products are sold only to qualified researchers who certify at checkout that the materials are for laboratory research and that they are 18 or older. We may decline or cancel any order where eligibility or intended use cannot reasonably be established.

Question 12

How are shipments handled?

Accepted Answer

Available shipping methods, packaging, and timing are shown during checkout for the items and destination in your order.

Question 13

What's included in the package?

Accepted Answer

The package contains the items listed in your order. Available public laboratory reports can be viewed separately in the Lab Results library.

Question 14

Where do you currently ship?

Accepted Answer

The checkout page shows the destinations currently available for an order.

Question 15

Do I need an account, and what is it for?

Accepted Answer

An account lets you check out and view your order history. CRX Longevity Biotech is an online catalog of research-grade peptides for qualified laboratories — the account exists solely to support ordering and support, not advertising or profiling.

Question 16

What happens when I sign in with Google?

Accepted Answer

Google sign-in is an optional way to create and access your CRX account through our identity provider, Clerk. We receive only your basic profile — name, email address, and profile picture — and use it solely to authenticate you and attach your orders to your account. We do not use Google data for advertising, do not sell it, and do not share it beyond the service providers named in our Privacy Policy. Our use of information received from Google APIs adheres to the Google API Services User Data Policy, including its Limited Use requirements. You can delete your account, or use email sign-in instead, at any time.

Question 17

What does “for laboratory research use only” mean?

Accepted Answer

It means the material may be used solely for scientific research by qualified personnel in an appropriate setting. It is not a drug, supplement, food, or cosmetic, and must not be administered to or consumed by humans or animals.

Question 18

Why is no dosing or human-use guidance provided?

Accepted Answer

Because these compounds are not authorized for human or veterinary use, any dosing or administration guidance would be inappropriate and outside the research-use framing. We provide analytical and laboratory-handling reference only.

Question 19

What kinds of questions will and won't your analytical staff answer?

Accepted Answer

Our staff answer questions about characterization, certificates, methods, molecular properties, storage, and reconstitution math for laboratory preparation. They do not provide dosing, administration, or any human- or veterinary-use guidance.

Question 20

Where is CRX Longevity Biotech based?

Accepted Answer

CRX Longevity Biotech is a Canadian research peptide brand operating from Ontario. Available shipping destinations are shown at checkout.

Research-grade peptides.Canadian standards.

A deep, documented catalog.

The catalog.

The documentation currently published.

How documentation stays traceable.

Product details

Report review

Public summary

Catalog reference

Order options

Public results, easy to review.

Common questions, technical answers.