Best PEG-MGF Vendors
10 vendors we track carry PEG-MGF. The 4 that pass our testing gate are ranked below by PSR score, with the certificate each one posts for PEG-MGF, a price matched at 2mg and any reader code. For laboratory research use only.
- Carry it
- 10
Carry it
- Pass testing gate
- 4
Pass testing gate
- Lab-confirmed COAs
- 3
Lab-confirmed COAs
Want every carrier ordered by its PEG-MGF certificate instead, with sizes and stock? See the full PEG-MGF comparison. How a score is built: How we rate. How to check a certificate yourself: how to read a peptide COA.
Top 3 PEG-MGF vendors by PSR score
The highest PSR scores among open stores that carry PEG-MGF 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
BioLongevity Labs7.24Strong- Certificate
- Verified (opens in new tab)
- Lab
- MDx BioAnalytical LaboratoryTier A+
- Purity
- 99.72%
- Tested
- (first seen)
- Price
- No 2mg
#2 by PSR score
Rogue Compounds6.88Fair- Certificate
- Verified (opens in new tab)
- Lab
- ILS LaboratoriesTier B+
- Purity
- 99.84%
- Tested
- Price
- $24.50/mg ($48.99 for 2mg)
#3 by PSR score
Sports Technology Labs6.88Fair- Certificate
- Verified (opens in new tab)
- Lab
- MZ BiolabsTier A
- Purity
- 99.45%
- Tested
- Price
- $25.00/mg ($49.99 for 2mg)
Best PEG-MGF vendors with a reader discount
Affiliate partners that pass the testing gate and give readers a code that applies to PEG-MGF, 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.
- BioLongevity Labs7.24Strong
- NextGen Peps5.95FairNoneNo third-party COA was publicly available at audit time
Every PEG-MGF vendor that passes the gate, by PSR score
4 vendors, highest PSR score first; equal scores are listed alphabetically. Price per mg is matched at 2mg, the size most carriers sell, so vials compare like for like. The certificate column is the vendor’s certificate for PEG-MGF 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.
| # | Vendor | PSR score | PEG-MGF certificate | $/mg at 2mg | Reader code | Links |
|---|---|---|---|---|---|---|
| 1 | BioLongevity Labs | 7.24Strong | Verified (opens in new tab) | No 2mg | Shop → | |
| 2 | Rogue Compounds | 6.88Fair | Verified (opens in new tab) | $24.50/mg | Shop → | |
| 3 | Sports Technology Labs | 6.88Fair | Verified (opens in new tab) | $25.00/mg | Shop → | |
| 4 | NextGen Peps | 5.95Fair | NoneNo third-party COA was publicly available at audit time | No 2mg | Shop → |
Listed separately: 6 vendors outside the ranking
These carry PEG-MGF 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 6 vendors that fail the testing gate
| # | Vendor | PSR score | PEG-MGF certificate |
|---|---|---|---|
| 1 | Swiss Chems | 5.39Weak | NoneNo third-party COA was publicly available at audit time |
| 2 | Redline Bio Labs | 4.80Weak | Vendor report (lab not established) (opens in new tab) |
| 3 | GenX Bio | 4.45Weak | Login-gatedCOAs are provided but sit behind the vendor's login wall |
| 4 | Nextday Peptides | 3.27Poor | NoneNo third-party COA was publicly available at audit time |
| 5 | Welon Peptide Solutions | 2.13Poor | NoneNo third-party COA was publicly available at audit time |
| 6 | Medura Peptides | 1.63Poor | NoneNo third-party COA was publicly available at audit time |
Best PEG-MGF vendors: frequently asked questions
Who is the best PEG-MGF vendor?
By PSR score, BioLongevity Labs is the highest-rated open store carrying PEG-MGF that passes our testing gate (7.24/10, Strong). Rogue Compounds (6.88) and Sports Technology Labs (6.88) follow. The certificate each of them posts for PEG-MGF is shown beside the score, so a reader can check it before buying.
Where can I buy PEG-MGF with a discount code?
2 affiliate partners carrying PEG-MGF pass our testing gate and give readers a code that applies to it. The highest rated is BioLongevity Labs (code PSR, 15% off). We may earn a commission on those links; it never changes a score or a rank.
How are these PEG-MGF 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 PEG-MGF are shown but do not change the order, and affiliate status never does.
Why are some PEG-MGF vendors listed separately?
6 vendors carrying PEG-MGF 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 PEG-MGF certificate of analysis?
Open the certificate from the vendor's row, confirm it names PEG-MGF and a batch, then look up the verification key on the testing laboratory's own site. 3 of the 10 PEG-MGF 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.