Buyer’s guide
Choosing a peptide testing lab
Most comparisons between testing laboratories start with price per test, which is the axis that predicts the least about whether you will end up with an answer you can use. These eight questions predict considerably more.
We are one of the options in this market, so treat the right-hand column below as disclosure rather than neutral assessment. The questions themselves are the useful part: they apply to any laboratory, including this one, and every answer we give about ourselves can be checked against the rest of this site.
We have deliberately not published a table of competitors’ prices and turnaround times. Those figures change, they are frequently reproduced inaccurately across affiliate sites, and a number we cannot verify from the source is not evidence. Ask each laboratory directly, and compare what they tell you against the eight questions here.
01 · Independence from the seller
Does the laboratory sell the material it is testing?
A result from the party selling the product is not third-party evidence. This is the first filter, because it determines whether the document tells you anything the seller could not simply assert.
Canada Peptide Testing: Canada Peptide Testing does not sell peptides. Testing is the entire business.
02 · Method disclosure
Does the report name the method, column, mobile phase, and detection wavelength?
A purity percentage is defined by the conditions that produced it. Without them the number cannot be compared with any other number, including one from the same laboratory on a different day.
Canada Peptide Testing: Method and detection conditions are stated on every released report.
03 · Raw analytical data
Do you receive the chromatogram and mass spectrum, or only a conclusion?
A summary asks you to trust an interpretation. The underlying trace lets a competent reader check peak shape, integration, baseline, and whether anything was co-eluting.
Canada Peptide Testing: Chromatogram and mass-spectrum evidence are attached to the report.
04 · Scope defined before payment
Is the analytical scope confirmed before the sample ships?
Scope disputes surface after the sample is destroyed, when the client wanted content and the laboratory measured area purity. Agreeing the question in writing beforehand is what prevents that.
Canada Peptide Testing: A chemist confirms method fit, required quantity, turnaround, and final price before you mail anything.
05 · Independent verification
Can a third party confirm the certificate later?
A PDF can be altered or reattached to a different batch. Verification means a report number resolving to a record the laboratory holds, viewable by someone you did not send the file to.
Canada Peptide Testing: Every public certificate resolves at a QR-verifiable registry page by report number.
06 · Sample identity and custody
How is the sample tracked from arrival to report?
The value of any result depends on the certainty that it describes your sample. That requires a unique identifier applied at intake and carried through preparation, analysis, and review.
Canada Peptide Testing: A unique sample ID is issued before shipment and connects the request, the package, the laboratory record, and the certificate.
07 · Turnaround, defined honestly
Does the clock start at payment, at receipt, or at the start of analysis?
An advertised average is not a commitment, and the starting point moves the real figure by days. Ask what the number is measured from and what happens when the queue is long.
Canada Peptide Testing: Target turnaround is 5 to 7 business days measured from receipt of an accepted sample; 2-business-day rush is $149 CAD.
08 · Where the sample has to travel
What does it cost, in time and money, to get the sample there?
International shipping adds courier cost, customs clearance, transit time, and the risk of a sample sitting in a border facility. That cost belongs in the comparison alongside the test price.
Canada Peptide Testing: Domestic Canadian intake by tracked mail from every province and territory.
The total cost is not the test price
A per-test figure is one line in the real cost of an answer. The comparable number includes the second method if your question needs two, courier and customs charges to reach the laboratory, the delay while a sample clears a border, and the cost of repeating everything if the scope turns out to have been the wrong one. A laboratory that is cheaper per test and wrong for the question is not cheaper.
What no laboratory can give you
Independent of who runs the analysis, a testing result describes the sample received and the methods stated. It does not establish clinical safety, efficacy, sterility, legal status, or that other units from the same batch are equivalent. Any laboratory or supplier implying otherwise is telling you something the measurement does not support, and that is itself a signal about the laboratory.