Vendor and compound
L-Carnitine from PeptidePlugs
PeptidePlugs lists L-Carnitine at $0.030 per mg, 67% under the $0.090 peer median. 1 third-party certificate for this compound from this vendor is on file, assayed by Freedom Diagnostics Testing, averaging 99.79% purity. That is the cheapest listed price for L-Carnitine in the index.
All L-Carnitine vendors · PeptidePlugs profile · scores 82.6 of 100, rank 5 · 1 certificate for this compound · verified 5 Nov 2026
What it costs
| Vial | Listed price | Per mg | vs peer median | Listing |
|---|---|---|---|---|
| 1200 mg | $40 | $0.033 | -63% | L-Carnitine 1200mg |
Read from the vendor’s own store and normalised per milligram, because a smaller vial at a lower sticker price is usually the dearer peptide.
What the laboratory found
| Lot | Assayed | Purity | Label → assayed | Laboratory | Record |
|---|---|---|---|---|---|
| 137-01-SM | 15 Jun 2026 | 99.79% | 1200 mg → 218.95 mg | Freedom Diagnostics Testing | Open |
Freedom Diagnostics Testing publishes a lookup, so these reports can be confirmed at the laboratory rather than taken from the vendor. How to check one.
Other vendors selling L-Carnitine
| Vendor | Score | Per mg | Certificates for this compound |
|---|---|---|---|
| Modern Aminos | 79.7 | $0.090 | 0 |
| NeuroLabs Research | 74.6 | $0.100 | 0 |
| Northline Labs | 68 | $0.100 | 0 |
| Eternal Peptides | 66 | $0.090 | 0 |
Ordered by overall evidence score. See every vendor listing L-Carnitine.
Questions
Is L-Carnitine from PeptidePlugs third-party tested?
Yes. 1 certificate for L-Carnitine from PeptidePlugs is on file, signed by Freedom Diagnostics Testing. Each names a lot, prints the assayed mass against the labelled mass, and links to the document it was read from. Freedom Diagnostics Testing also publishes a lookup, so the report can be confirmed at the laboratory rather than taken from the vendor.
How much does L-Carnitine cost at PeptidePlugs?
$0.030 per milligram, from 1200 mg at $40. The peer median across every vendor we price for L-Carnitine is $0.090 per mg, so this is -67% against the market. Prices are normalised per milligram so vials of different sizes compare fairly.
Is PeptidePlugs a good place to buy L-Carnitine?
PeptidePlugs scores 82.6 of 100 on the published rubric and ranks 5 overall, computed from its documentation rather than from opinion. For L-Carnitine specifically it has 1 certificate on file.