Purity
Separates the sample and measures what share of the detected signal is the target peptide. Reported as an area percentage, for example 99.1%.
Does not tell you how much peptide is in the vial, or what the other 0.9% is.
Tested by lot Freedom Diagnostics, USA
Don’t take our word for it. Read the lab’s.
Every lot is tested by Freedom Diagnostics for purity and identity. The full report goes up here by lot number with the lab’s own search code, so you can check it at the source in 30 seconds.
Lot tracker
The first lots
Coming soon
- Samples pulledOne from each lot, before a vial is listed.
- At Freedom DiagnosticsFranklin, Tennessee. HPLC for purity, mass spectrometry for identity.HPLCMS
- Report publishedUnedited, with the lab’s search code and its SHA-256 fingerprint, the day the results are in.
- Released to shipOnly a released lot is sold. A lot on hold never leaves.
On every lot page
One email the day the first certificates are up
- Lot number
- Purity, HPLC
- Identity, MS
- Lab search code
- Test date
- SHA-256
- HPLC + MSevery lot, purity and identity
- USA labthird party, named on the report
- Lab lookupcheck it at the source
- SHA-256every report fingerprinted
How a lot earns its page
From the lab to your door, nothing skipped.
-
01A sample is pulled from the lot
Before a single vial is listed, a sample from that exact lot goes out for testing.
One sample per lot -
02Freedom Diagnostics runs it
An independent laboratory in Franklin, Tennessee. HPLC for purity, mass spectrometry for identity. The lab’s name is on the report, not ours.
HPLCMSFranklin, Tennessee -
03The report goes up, unedited
The full report, its SHA-256 fingerprint and the lab’s search code go on the lot page the day the results are in.
UneditedSHA-256Search code -
04Only then does it ship
Released lots are sold. A lot on hold stays on the ledger, marked as held, and never leaves.
Released onlyHeld stays held
Check it yourself
Verify any certificate in 30 seconds.
A certificate a seller hosts is only a picture until the lab confirms it. Every Method report carries the lab’s own search code, so you can check it at the source, not with us.
Freedom Diagnostics lookup- 1Copy the search code
It is on every certificate card and every lot page, with a copy button.
- 2Paste it into the lab’s lookup
The lab’s own site, not ours. It returns the report from their records.
- 3Match the details
Compound, lot, purity and dates should be identical to our page. If anything differs, email us and we will explain or correct it in public.
Reading a certificate
What a certificate tells you. And what it can’t.
Two tests do most of the work. Knowing what each one measures is the difference between reading a report and trusting a number.
Certificate of analysisFreedom DiagnosticsFranklin, Tennessee1
Lot number2
Compound
Received
Tested
Issued
3
Purity HPLC%
Identity MS
4
Search code at the lab
5
SHA-256
6
What a real certificate shows
Six things to look for on any seller’s report, ours included.
- 1The issuing lab, by nameA real laboratory you can contact, not a logo or “third party tested”.
- 2A lot number that matches your orderOne report per lot. A certificate with no lot number proves nothing about what you received.
- 3DatesWhen the sample was received, tested and the report issued.
- 4A method behind every numberA purity with no method, or “99%+” with no result, is a claim, not a measurement.
- 5A code you can check at the labSo the report can be confirmed from the lab’s records, not only the seller’s.
- 6The unedited reportOurs carry a SHA-256 fingerprint on the lot page, so any change to the file would show.
Identity
Mass spectrometry weighs the molecule and compares it with the theoretical mass of the compound on the label. It confirms you have the right peptide.
Does not tell you how pure it is. That is what the HPLC result is for.
Net content, sterility, endotoxin
A freeze-dried powder also holds water and counter-ions, so the mass on the label is a nominal fill. These need their own tests, and each lot page says plainly which tests were done and which were not.
Read the full guides
- 3 minute read How to read a certificate of analysis What each part of a research peptide certificate of analysis tells you, and how to confirm it with the lab that issued it. Read the guide
- 2 minute read HPLC and mass spectrometry: what each test proves Purity and identity are different questions. What each test answers, what it cannot tell you, and why a certificate needs both. Read the guide
- 2 minute read What a lot number tells you A lot number links the material you received to the batch that was tested. What it means, where to find it and how to look one up. Read the guide
The proof wall
The first certificates go up here.
Before any lot ships
Certificates go up here as the results come in
Each lot gets its own page: the full report from Freedom Diagnostics, the lab’s search code, purity and identity, and a link to buy from that exact lot. One email the day the first ones are published, nothing else unless you ask.
Ready when you are
Sealed, lot tracked, at your door fast.
Every vial ships sealed and tracked by UPS, and its lot number is on your order. Orders by 6pm PST ship the same day, Monday to Saturday. Free shipping on $150+.
Not sure yet? Ask a real person: support@methodbiolabs.com. Replies usually within 2 hours.
For laboratory research use only
All products are supplied for laboratory research use only. They are not drugs, foods, supplements or medical devices and are not approved for human use. Method Biolabs does not provide dosing, administration or protocol guidance under any circumstances.
Can’t find your lot? Check the lot number in your order email, or email support@methodbiolabs.com and we will point you to its certificate the same business day.
