Test your peptides at Chromate
681 tests published across 15 peptides from 100 vendors
first test 17 Dec 2024 · latest 14 Jul 2026
All partner labs →Pass rate on the most recent 200 tests under Finnrick’s Purity Focus methodology
Pass rate on the most recent 200 tests under Finnrick’s Purity Focus methodology
Add Endotoxins and other options with our Standard testing.
About Chromate
- Tests published
- 681
- Latest test
- 14 Jul 2026
- Location
- Hudson, NH
- Instrumentation
- HPLC / LC-MS
Chromate is a US-based analytical service focused on peptide and supplement integrity, with results published through a QR-code certificate-verification portal. Finnrick partners with the lab for independent peptide testing — every sample is analyzed on calibrated, professionally operated equipment and returned as a formal Certificate of Analysis (COA) documenting exactly what was found.
See how Chromate answered our methodology questionnaire and how it compares to other partner labs.
Methodology Questionnaire
Responded 12 Jan 2026
A) Quantification Basis
1. Is reported quantity based on absolute calibration against a reference standard, or relative/normalized signal?
Reported quantities are derived from calibration against an external reference standard.
2. Do you average replicate injections or preparations before reporting a single value?
Replicate injections are performed only for the reference standard to verify instrument performance; daily system suitability typically demonstrates an RSD of < 0.3%.
B) Sample Preparation
3. Do you assume full recovery of peptide upon reconstitution, or do you measure recovery implicitly?
Complete recovery upon reconstitution is assumed, and no correction is applied to the measured quantity.
4. Do you correct for adsorption, losses, or degradation, or are these reflected in the final number?
No explicit corrections are applied for adsorption, material loss, or degradation, as reference standards and samples undergo the same preparative workflow.
C) Detection & Calculation
5. Which detector(s) are used for quantification (UV, MS, both), and which signal is authoritative for quantity?
UV detection is used for quantitative determination of all peptides; mass spectrometry is employed only for characterization or when compounds lack chromophores.
6. How is purity incorporated into quantity (e.g., normalization vs independent measurement)?
Purity and quantity are determined independently; purity is not used to adjust the reported quantity.
D) Precision & Uncertainty
7. What is your stated margin of error for this peptide, and does it include preparation + calibration uncertainty?
The typical overall margin of error for most peptides is estimated to be 2–5%, encompassing method and preparation variability.
8. Are reported values rounded, truncated, or raw calculated outputs?
Quantity values are rounded to four significant figures. Chromatographic purity values are reported as raw outputs from the data analysis software without additional rounding.
E) Interpretation
9. Does your reported “mg per vial” represent recovered mass, inferred mass, or label-equivalent mass?
Reported quantities represent the recovered mass of material and are not adjusted.
10. Under what conditions would you expect two vials from the same batch to differ by <1%?
The primary contributor to vial-to-vial variability within a batch is the precision of the manufacturer’s vial-filling equipment.
What you’ll learn
Chromate runs your samples through HPLC analysis, and sends back a certificate of analysis, detailing test results. Computed through your choice of Finnrick safety standards, this sample is then declared as “passing” or “failing”, depending on the answers to three critical questions:
Identity
Is this actually what the label claims, or something else entirely?
Purity
Are there other peptides, proteins, or contaminants mixed in with your compound?
Quantity
Did you receive the amount of active ingredient you paid for, or are you dosing based on wishful thinking?
HPLC is the standard analytical method for peptide characterization, used across research institutions and commercial labs worldwide.
Tests Chromate can run
Identity, Purity & Quantity
UnavailableConfirms it’s the right compound, at full strength, and only this compound — by HPLC.
Learn about this test; online ordering is currently unavailable.
Endotoxins Testing
UnavailableBacterial toxins can trigger fever or adverse reactions in the body.
Learn about this test; online ordering is currently unavailable.
Heavy Metals Panel
UnavailableTraces of arsenic, cadmium, mercury and lead can build up in the body over time.
Learn about this test; online ordering is currently unavailable.
Residual Solvents
UnavailableLeftover solvents from synthesis can be toxic if they weren’t fully purged.
Learn about this test; online ordering is currently unavailable.
Sterility Testing
UnavailableChecks the vial is free of bacterial and fungal contamination.
Learn about this test; online ordering is currently unavailable.
Peptides Chromate can test
No products are currently available to order with this lab. Its previously published results remain available.
How Finnrick publishes results
Finnrick publishes results when we can establish sample provenance and have enough evidence that the sample represents the product sold by the named vendor. Published results include vendor and product details, helping customers evaluate the available evidence and encouraging better supply-chain decisions.
Results that do not meet these requirements are shared with the requester and kept outside the public record. Read how Finnrick decides which results to publish →
Don’t want to share sample details?
The Confidential option costs an additional $99 per sample in Custom, on top of Basic testing, any product surcharge and selected tests. Standard already includes Confidential. Results are shared with you and not published publicly.
Frequently asked questions
Can I test my peptides at Chromate?
Choose Chromate in Custom when it is available for your product and selected tests. The current options are shown below. The Confidential option is a paid Custom add-on and is included in Standard.
What does Chromate test for?
See the current test options on this page. Availability and total price depend on your product, lab and selected tests; Basic testing is required.
Are Chromate results independent and trustworthy?
Samples sent through Finnrick are anonymized before they reach the lab. Finnrick reviews lab performance using overlapping results and independently obtained anchor samples. Results are published only when sample provenance meets Finnrick's publication requirements.
How many Chromate test results has Finnrick published?
681 published results to date, across 15 peptides and 100 vendors. However, not all tests Finnrick has commissioned from this lab have been published: more about our publishing policy.
Add Endotoxins and other options with our Standard testing.
Do you distribute peptides?
Finnrick offers professional testing services for vendors who want to verify their supply chain and build trust with customers through independent quality assurance.
Learn about vendor services