Proof before you trust
a single vial.
At NEA Diagnostics, we specialize in high-precision purity and quantity testing for research-use-only compounds, delivered with an unmatched turnaround time. Our hands-on approach simplifies complex analysis and publishes every result openly, so you get fast, accurate answers you can act on with confidence.
Independent results in the public record
Compounds tested across the catalog
Vendors independently ranked
No vendor pays for a passing grade.
Three steps from a sealed vial to a public result.
Vendors submit a test request
Vendors submit a request and ship the sample to our facility, or you can send in yours to test for free.
We run the analysis
Mass spectrometry confirms identity, then reverse phase HPLC measures purity and a calibrated method measures the real fill.
We publish openly
Every result lives at a verifiable address with the full trace, so a certificate can never be faked or edited.
Where the best vendors actually rank.
Tirzepatide
23 vendors- 1Huayi BiotechnologyA Great
- 2Limitless LifeA Great
- 3Qing Li PeptideA Great
Semaglutide
19 vendors- 1HK PeptidesA Great
- 2Reta-PeptideA Great
- 3Lejian Biotech PeptideA Great
Retatrutide
26 vendors- 1IQONA Great
- 2Peptide CraftersA Great
- 3Limitless LifeA Great
BPC 157
16 vendors- 1Paradigm PeptideA Great
- 2IQONA Great
- 3Bulk Peptide SupplyA Great
Verify a COA in seconds.
Someone handed you a NEA certificate. Enter the certificate identifier and read the authoritative result straight from our records.
Send us your sample.
Ship a compound to our lab in San Diego, CA and we will test it for purity and quantity at no cost. You can also request that we source and test a specific vendor.
Notes from the lab.
What a COA Actually Proves, and What It Does Not
A certificate is one data point from one moment in time. Here is how to read it without being misled by it.
12 Jun 2026Underdosing Is the Quiet Failure of the Peptide Market
Purity gets the attention, but our data shows quantity is where buyers lose the most value.
04 Jun 2026How We Source Blind Samples to Keep Vendors Honest
When a vendor knows a sample is headed to a lab, the sample stops being representative. So we buy like a normal customer.
21 May 2026A safer market starts with an honest number.
Browse the results, verify a certificate, or send us a sample. The record stays open to everyone.