Best KPV Vendors
52 vendors we track carry KPV. The 34 that pass our testing gate are ranked below by PSR score, with the certificate each one posts for KPV, a price matched at 10mg and any reader code. For laboratory research use only.
- Carry it
- 52
Carry it
- Pass testing gate
- 34
Pass testing gate
- Lab-confirmed COAs
- 31
Lab-confirmed COAs
Want every carrier ordered by its KPV certificate instead, with sizes and stock? See the full KPV comparison. How a score is built: How we rate. How to check a certificate yourself: how to read a peptide COA.
Top 3 KPV vendors by PSR score
The highest PSR scores among open stores that carry KPV and pass our testing gate. Affiliate status plays no part in this list.
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
#1 by PSR score
Southern Aminos8.09Strong- Certificate
- Verified (opens in new tab)
- Lab
- Freedom Diagnostics TestingTier A
- Purity
- 99.722%
- Tested
- Price
- $4.00/mg ($40.00 for 10mg)
#2 by PSR score
Amino Club8.08Strong- Certificate
- Verified (opens in new tab)
- Lab
- ILS LaboratoriesTier B+
- Purity
- 99.36%
- Tested
- Price
- $4.00/mg ($39.99 for 10mg)
#3 by PSR score
DAAVY Research8.01Strong- Certificate
- Verified (opens in new tab)
- Lab
- BioviridianTier A-
- Purity
- 99.83%
- Tested
- Price
- $4.40/mg ($44.00 for 10mg)
Best KPV vendors with a reader discount
Affiliate partners that pass the testing gate and give readers a code that applies to KPV, in PSR score order. This block is a convenience only: the ranking below is the same with or without it.
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
- DAAVY Research8.01Strong
- Luv Aminos7.90Strong
- LabFirst Peptides7.73Strong
- BioLongevity Labs7.24Strong
- Arctic Lab Supply7.09StrongNoneNo third-party COA was publicly available at audit time
- Limitless Biotech6.97Fair
- NovaForge Labs6.89FairNoneNo third-party COA was publicly available at audit time
- JD BioWorks6.34Fair
- Hello Stacks6.08Fair
- NextGen Peps5.95Fair
- AminoVault5.78Fair
Every KPV vendor that passes the gate, by PSR score
34 vendors, highest PSR score first; equal scores are listed alphabetically. Price per mg is matched at 10mg, the size most carriers sell, so vials compare like for like. The certificate column is the vendor’s certificate for KPV only. Affiliate status never affects the order (how we keep it separate).
Affiliate links: we may earn a commission if you buy. It never changes a score or rank.
Listed separately: 18 vendors outside the ranking
These carry KPV but do not meet our testing gate, so they are never placed in the ranking above, whatever their score. The gate records what we could verify; it is not a finding of a quality or safety problem.
Show 18 vendors that fail the testing gate
| # | Vendor | PSR score | KPV certificate |
|---|---|---|---|
| 1 | Modified Aminos | 6.75Fair | Verified (opens in new tab) |
| 2 | Curo | 6.27Fair | View (opens in new tab) |
| 3 | Swiss Chems | 5.39Weak | Verified (opens in new tab) |
| 4 | Redline Bio Labs | 4.80Weak | Verified (opens in new tab) |
| 5 | Based Research | 4.54Weak | View (opens in new tab) |
| 6 | Ageless Peptides | 4.36Weak | View (opens in new tab) |
| 7 | Lotus Peptide | 3.74Poor | Vendor report (lab not established) (opens in new tab) |
| 8 | Pexo Labs | 3.63Poor | Vendor report (lab not established) (opens in new tab) |
| 9 | Drexa Labs | 3.28Poor | NoneNo third-party COA was publicly available at audit time |
| 10 | RapidCore Bio | 3.26Poor | Vendor-issued (opens in new tab) |
| 11 | Snowman Research | 3.06Poor | NoneNo third-party COA was publicly available at audit time |
| 12 | YourFitnessPeptides | 2.75Poor | NoneNo third-party COA was publicly available at audit time |
| 13 | Anhydrolabs | 2.66Poor | NoneNo third-party COA was publicly available at audit time |
| 14 | Peptide Warehouse US | 2.46Poor | NoneNo third-party COA was publicly available at audit time |
| 15 | Peptara Labs | 2.38Poor | NoneNo third-party COA was publicly available at audit time |
| 16 | PepBiotics | 2.23Poor | NoneNo third-party COA was publicly available at audit time |
| 17 | Welon Peptide Solutions | 2.13Poor | NoneNo third-party COA was publicly available at audit time |
| 18 | Medura Peptides | 1.63Poor | NoneNo third-party COA was publicly available at audit time |
Best KPV vendors: frequently asked questions
Who is the best KPV vendor?
By PSR score, Southern Aminos is the highest-rated open store carrying KPV that passes our testing gate (8.09/10, Strong). Amino Club (8.08) and DAAVY Research (8.01) follow. The certificate each of them posts for KPV is shown beside the score, so a reader can check it before buying.
Where can I buy KPV with a discount code?
11 affiliate partners carrying KPV pass our testing gate and give readers a code that applies to it. The highest rated is DAAVY Research (code PSR10, 10% off). We may earn a commission on those links; it never changes a score or a rank.
How are these KPV vendors ranked?
By PSR score, the published vendor score out of 10, built from lab testing, certificate verification, pricing, shipping, operating history and reviews under the rules on How We Rate. Equal scores are listed alphabetically. Price per mg and the certificate for KPV are shown but do not change the order, and affiliate status never does.
Why are some KPV vendors listed separately?
18 vendors carrying KPV do not meet our testing gate: third-party testing could not be established or independently verified. They are listed below the ranking rather than in it. The gate records what we could verify; it is not a finding of a quality or safety problem.
How do I check a KPV certificate of analysis?
Open the certificate from the vendor's row, confirm it names KPV and a batch, then look up the verification key on the testing laboratory's own site. 31 of the 52 KPV certificates we track were confirmed at the lab. Our guide on how to read a peptide COA walks through each field. For laboratory research use only.